free igt slots: play top casino games online for free

Introduction to IGT Slots International Game Technology (IGT) is a leading name in the casino gaming industry, known for creating some of the most popular and innovative slot machines worldwide. IGT slots are renowned for their high-quality graphics, engaging gameplay, and exciting bonus features. The good news is that you can now enjoy these top casino games online for free, without the need to spend any money. Why Play IGT Slots for Free? 1. No Financial Risk Playing IGT slots for free allows you to experience the thrill of casino gaming without any financial risk.

Ad Disclosure

ALLTop Rated By UsersLatestPopular

Updated: -

• Cash King Palace
  new

  

  Royal Wins100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Lucky Ace Palace
  

  Luck&Luxury100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Starlight Betting Lounge
  

  Celestial Bet100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Spin Palace Casino
  

  Win Big Now100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Silver Fox Slots
  

  Elegance+Fun100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Golden Spin Casino
  

  Luxury Play100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Royal Fortune Gaming
  

  Opulence & Thrills100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Lucky Ace Casino
  

  Luck&Luxury100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Diamond Crown Casino
  

  Opulence & Fun100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more
• Victory Slots Resort
  

  Spin to Win100% / $1500

  Casino popularity:

  Collecting more data...

  Payment methods

  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 
  • 

  Play
  • Wagering: 35 x (b)
  • Withdrawal time: 1 days
  • Minimum deposit to casino: $30
  • Bonus max bet: $5
  • Established: 2024
  • Free Spins: 200

  • 1st Deposit Bonus:100% / $1500 + 200 Free Spins
  • Bonus code: FRUIT22nd Deposit Bonus:100% / $1500 + 75 Free Spins
  • Bonus code: FRUIT33rd Deposit Bonus:75% / $3000 + 75 Free Spins
  • Bonus code: FRUIT44th Deposit Bonus:50% / $4500 + 200 Free Spins

  • Leading selection of slots
  • VISA casino site
  • HD streaming casino games
  • Newly unveiled casino
  • Signup offer now available
  • Mr. Gamble special bonuses

  Get the full details

  

  
  Show more

Source

1. play free buffalo slots no download - aristocrat casino game
2. win real money with lucky devil slots: exciting casino game experience
3. wild wild riches slots: exciting online casino game for big wins
4. slots game apps to win real money
5. win real money with lucky devil slots: exciting casino game experience
6. boost your fun with slotomania: play the ultimate casino slots game

free igt slots: play top casino games online for free

Introduction to IGT Slots

International Game Technology (IGT) is a leading name in the casino gaming industry, known for creating some of the most popular and innovative slot machines worldwide. IGT slots are renowned for their high-quality graphics, engaging gameplay, and exciting bonus features. The good news is that you can now enjoy these top casino games online for free, without the need to spend any money.

Why Play IGT Slots for Free?

1. No Financial Risk

Playing IGT slots for free allows you to experience the thrill of casino gaming without any financial risk. You can enjoy all the features and bonuses without worrying about losing money.

2. Practice and Improve

Free IGT slots provide an excellent opportunity to practice and improve your gaming skills. You can learn the rules, understand the bonus features, and develop strategies without any pressure.

3. Access to Top Games

IGT offers a wide range of top-tier slot games. By playing for free, you can access and enjoy these games without any restrictions. Some of the most popular IGT slots include:

• Da Vinci Diamonds
• Cleopatra
• Wheel of Fortune
• Siberian Storm
• Golden Goddess

4. Convenience

Playing IGT slots online for free is incredibly convenient. You can access these games from the comfort of your home, on your desktop, tablet, or smartphone. There’s no need to travel to a physical casino or wait for a machine to become available.

How to Play IGT Slots for Free

1. Choose a Reliable Online Casino

Select an online casino that offers free IGT slots. Ensure the casino is reputable and secure. Some popular options include:

• Casino.com
• 888 Casino
• Betway Casino

2. Create a Free Account

Most online casinos allow you to create a free account to access their free games. This process is usually quick and straightforward.

3. Browse the Game Library

Once you have an account, browse the game library to find IGT slots. You can filter the games by provider to easily locate IGT titles.

4. Start Playing

Select an IGT slot game and start playing for free. Enjoy the game, explore its features, and have fun without any financial commitment.

Popular IGT Slots to Play for Free

1. Cleopatra

Cleopatra is one of IGT’s most iconic slot games. Set against the backdrop of ancient Egypt, this game features 20 paylines and offers free spins with a 3x multiplier. The game’s captivating graphics and engaging gameplay make it a favorite among players.

2. Da Vinci Diamonds

Da Vinci Diamonds is a visually stunning slot game that features artwork from the Renaissance period. The game includes a Tumbling Reels feature, where winning symbols disappear to be replaced by new ones, potentially leading to multiple wins from a single spin.

3. Wheel of Fortune

Inspired by the popular TV game show, Wheel of Fortune slot game offers a thrilling experience with its Wheel Bonus feature. Players can win big prizes by spinning the wheel and landing on lucky segments.

4. Siberian Storm

Siberian Storm takes players on an icy adventure with its unique Multiway Xtra feature. This game offers 720 ways to win and includes free spins with increasing multipliers.

5. Golden Goddess

Golden Goddess is a mystical slot game that features a Super Stacks feature, where stacked symbols can lead to big wins. The game’s serene atmosphere and rewarding gameplay make it a popular choice among players.

Playing IGT slots for free is an excellent way to enjoy top casino games without any financial risk. Whether you’re a seasoned player or a beginner, you can explore a wide range of IGT titles, practice your skills, and have fun from the comfort of your home. So, why not give it a try and discover the excitement of IGT slots today?

free download igt slots: enjoy exciting casino games online

In the world of online entertainment, casino games have become a popular pastime for many. Among the various providers, International Game Technology (IGT) stands out as a leader in the industry. IGT slots offer a thrilling experience that can be enjoyed from the comfort of your home. This article will guide you through the process of downloading IGT slots for free and highlight some of the exciting games you can play.

Why Choose IGT Slots?

IGT is renowned for its innovative and high-quality casino games. Here are some reasons why you should consider downloading IGT slots:

• Variety of Games: IGT offers a wide range of slot games, each with unique themes and features.
• High-Quality Graphics and Sound: The games are designed with state-of-the-art graphics and sound effects to enhance your gaming experience.
• User-Friendly Interface: IGT slots are easy to navigate, making them suitable for both beginners and experienced players.
• Regular Updates: The company frequently updates its game library, ensuring that you always have access to the latest and greatest titles.

How to Download IGT Slots for Free

Downloading IGT slots is a straightforward process. Follow these steps to get started:

1. Choose a Reputable Online Casino: Ensure that the casino you select is licensed and regulated. This ensures a safe and fair gaming environment.
2. Create an Account: Sign up for an account on the chosen casino’s website. This usually involves providing some basic information and verifying your identity.
3. Download the Casino Software: Most reputable casinos offer a downloadable client. Look for the “Download” button on the casino’s homepage and follow the instructions.
4. Install the Software: Once the download is complete, run the installer and follow the on-screen instructions to install the software on your device.
5. Log In and Start Playing: After installation, log in using your account credentials and start exploring the IGT slots available.

Popular IGT Slot Games

IGT offers a plethora of slot games, each with its own unique charm. Here are some of the most popular titles:

• Wheel of Fortune: Based on the iconic TV show, this game features exciting bonus rounds and the chance to win big.
• Da Vinci Diamonds: A visually stunning game with tumbling reels and a unique dual-play feature.
• Cleopatra: A classic slot game with an Egyptian theme, offering free spins and multipliers.
• Siberian Storm: This game features the MultiWay Xtra wagering system, providing 720 ways to win.
• Double Diamond: A simple yet engaging game with classic symbols and a high payout potential.

Tips for Playing IGT Slots Online

To make the most out of your IGT slot experience, consider the following tips:

• Set a Budget: Always play within your means. Set a budget for your gaming session and stick to it.
• Take Advantage of Bonuses: Many online casinos offer bonuses such as free spins and deposit matches. Make use of these to enhance your gameplay.
• Understand the Game: Before diving in, take some time to understand the rules and features of the game. This will help you make informed decisions.
• Play for Fun: Remember that online slots are primarily for entertainment. Enjoy the experience and don’t get too caught up in the pursuit of winnings.

IGT slots offer an exciting and immersive online casino experience. By following the simple steps outlined in this article, you can download and enjoy these games for free. Whether you’re a seasoned player or a newcomer to the world of online slots, IGT has something to offer everyone. So, why wait? Start your journey today and discover the thrill of IGT slots!

free igt slots: play top casino games online for free

In the world of online entertainment, casino games have become a popular pastime for many. Among the myriad of options available, IGT (International Game Technology) slots stand out as some of the most engaging and entertaining games. The best part? You can play these top casino games online for free! This article will guide you through the world of free IGT slots, highlighting some of the best games and where to find them.

What are IGT Slots?

IGT is a leading developer of gaming solutions, known for creating some of the most innovative and exciting slot games in the industry. Their games are characterized by high-quality graphics, immersive soundtracks, and engaging gameplay. Whether you’re a seasoned gambler or a casual player, IGT slots offer something for everyone.

Key Features of IGT Slots

• High-Quality Graphics: IGT slots are known for their stunning visuals, which enhance the overall gaming experience.
• Engaging Soundtracks: The audio elements in IGT slots are designed to keep players entertained and immersed in the game.
• Innovative Gameplay: IGT constantly pushes the boundaries of slot game design, offering unique features and mechanics that set their games apart.
• Wide Variety: From classic slots to modern video slots, IGT offers a diverse range of games to suit different tastes.

Top Free IGT Slots to Play Online

Here are some of the top IGT slots that you can play online for free:

1. Da Vinci Diamonds

• Gameplay: Da Vinci Diamonds is a classic IGT slot known for its tumbling reels feature, where winning symbols disappear and new ones fall into place, potentially leading to multiple wins from a single spin.
• Theme: The game is themed around the Renaissance period, featuring famous artworks by Leonardo da Vinci.
• Free Play: Available on various online platforms, including casino websites and mobile apps.

2. Wheel of Fortune

• Gameplay: Based on the popular TV game show, Wheel of Fortune slots offer a thrilling experience with bonus rounds and the chance to win big.
• Theme: The game features iconic elements from the TV show, including the wheel and various symbols related to the show’s theme.
• Free Play: Widely available on online casinos and gaming websites.

3. Cleopatra

• Gameplay: Cleopatra is one of IGT’s most popular slots, known for its 20-payline structure and the chance to win up to 10,000x your bet.
• Theme: The game is set in ancient Egypt, with symbols like Cleopatra, the Sphinx, and various Egyptian gods.
• Free Play: Easily accessible on numerous online platforms.

4. Siberian Storm

• Gameplay: Siberian Storm features a unique multiway Xtra Win system, allowing players to win from left to right and right to left.
• Theme: The game is set in the icy wilderness of Siberia, with symbols like tigers, snowflakes, and gemstones.
• Free Play: Available on many online casinos and gaming sites.

5. Pixies of the Forest

• Gameplay: Pixies of the Forest offers a magical experience with its Tumbling Reels feature and a bonus round that can be triggered by landing three or more bonus symbols.
• Theme: The game is set in a mystical forest, with symbols like pixies, fairies, and magical trees.
• Free Play: Widely available on online platforms.

Where to Play Free IGT Slots Online

To enjoy these top IGT slots for free, you can visit various online platforms:

• Casino Websites: Many online casinos offer free versions of IGT slots. Simply create an account and start playing without any deposit required.
• Gaming Websites: There are numerous gaming websites that provide free access to IGT slots. These sites often require no registration or download.
• Mobile Apps: Several mobile apps offer free IGT slots. These apps are available on both iOS and Android platforms.

Free IGT slots offer a fantastic way to enjoy top casino games online without any financial risk. With their high-quality graphics, engaging soundtracks, and innovative gameplay, IGT slots provide an immersive and entertaining experience. Whether you’re a fan of classic slots or modern video slots, there’s an IGT game out there for you. So, why not dive into the world of free IGT slots and discover your next favorite game?

play igt slots online: win big with top casino games

In the world of online entertainment, few experiences can rival the thrill of playing IGT slots. International Game Technology (IGT) is a leading name in the casino gaming industry, known for its innovative and high-quality slot machines. Whether you’re a seasoned gambler or a casual player, IGT slots offer a diverse range of games that cater to all tastes and preferences. This article will guide you through the exciting world of IGT slots, highlighting why they are a top choice for online casino enthusiasts.

Why Choose IGT Slots?

IGT has established itself as a pioneer in the gaming industry, with a reputation for creating engaging and rewarding slot games. Here are some reasons why IGT slots stand out:

• Innovative Gameplay: IGT is known for pushing the boundaries of traditional slot games. Their titles often feature unique themes, immersive graphics, and innovative bonus features that keep players coming back for more.
• High-Quality Graphics and Sound: The visual and auditory experience in IGT slots is second to none. High-definition graphics and immersive soundtracks enhance the overall gaming experience, making it feel like you’re in a real casino.
• Wide Range of Themes: IGT offers a diverse selection of slot games, each with its own unique theme. Whether you’re into ancient civilizations, fantasy worlds, or classic fruit machines, there’s an IGT slot for you.
• Fair and Secure: IGT is a trusted name in the industry, known for its commitment to fair play and security. All IGT slots are rigorously tested to ensure they meet the highest standards of fairness and reliability.

Popular IGT Slot Games

IGT has a vast portfolio of slot games, each with its own unique features and appeal. Here are some of the most popular IGT slots that you can play online:

1. Wheel of Fortune

Wheel of Fortune is one of IGT’s most iconic slot games. Based on the popular TV show, this slot offers a thrilling gaming experience with multiple bonus features, including the famous Wheel of Fortune bonus round.

2. Da Vinci Diamonds

Da Vinci Diamonds takes players on a journey through the Renaissance, featuring famous artworks and gemstones. This slot is known for its Tumbling Reels feature, which allows for multiple wins from a single spin.

3. Cleopatra

Cleopatra is a fan-favorite, transporting players to ancient Egypt with its stunning visuals and engaging gameplay. The slot offers a lucrative free spins bonus round, where players can win up to 180 free spins.

4. Siberian Storm

Siberian Storm is a visually stunning slot game with a unique Multiway Xtra feature. This allows players to win in 720 different ways, making it a highly rewarding and exciting game to play.

5. Golden Goddess

Golden Goddess is a fantasy-themed slot game with beautiful graphics and a relaxing soundtrack. The game features a Super Stacks feature, where stacked symbols can lead to big wins.

How to Play IGT Slots Online

Playing IGT slots online is a straightforward process. Here’s a step-by-step guide to help you get started:

1. Choose a Reputable Online Casino: Look for an online casino that offers IGT slots. Ensure the casino is licensed and regulated to guarantee a safe and fair gaming experience.
2. Create an Account: Sign up for an account at the chosen online casino. This usually involves providing some basic personal information and setting up a payment method.
3. Deposit Funds: Make a deposit into your casino account using your preferred payment method. Most online casinos offer a variety of deposit options, including credit/debit cards, e-wallets, and bank transfers.
4. Select an IGT Slot: Browse the casino’s selection of IGT slots and choose the game you want to play. Click on the game to load it.
5. Start Playing: Once the game is loaded, you can start playing. Adjust your bet size and click the spin button to begin. Most IGT slots offer an autoplay feature for uninterrupted gameplay.

Tips for Winning Big

While luck plays a significant role in slot games, there are some strategies you can use to increase your chances of winning:

• Manage Your Bankroll: Set a budget for your gaming session and stick to it. Avoid chasing losses and know when to walk away.
• Take Advantage of Bonuses: Many online casinos offer bonuses and promotions that can boost your bankroll. Look for casinos that offer free spins or deposit bonuses on IGT slots.
• Understand the Game: Before playing, take some time to understand the game’s rules, paylines, and bonus features. This will help you make informed decisions and maximize your winning potential.
• Play for Fun: Remember that slot games are primarily for entertainment. Enjoy the experience and don’t get too caught up in the pursuit of winning.

IGT slots offer a thrilling and rewarding online gaming experience that is hard to match. With their innovative gameplay, high-quality graphics, and diverse range of themes, IGT slots are a top choice for casino enthusiasts. Whether you’re a seasoned player or a newcomer to the world of online slots, IGT has something to offer. So, why wait? Dive into the exciting world of IGT slots and see if you can win big!

Frequently Questions