Looking for some fun, free games to play with your friends online? Steam has a ton of great options, and we've rounded up some of the best. Whether you're into competitive shooters, cooperative adventures, or just hanging out and chatting, there's something on this list for everyone.

1. Team Fortress 2

Team Fortress 2 is a classic online shooter that's still going strong after all these years. It's a fast-paced, action-packed game with a unique art style and a ton of personality. There are nine different classes to choose from, each with their own unique abilities and weapons. The game is free-to-play, but you can also buy a variety of cosmetic items and weapons to customize your character. With regular updates and a dedicated player base, Team Fortress 2 is a great choice for anyone looking for a fun and competitive multiplayer experience.

2. Dota 2

Dota 2 is a complex but rewarding MOBA (Multiplayer Online Battle Arena) game. Two teams of five players battle it out to destroy each other's base. With over 100 heroes to choose from, each with their own unique abilities and playstyles, Dota 2 offers endless replayability. The game has a steep learning curve, but it's incredibly rewarding to master. If you're looking for a challenging and strategic multiplayer game, Dota 2 is a great option.

3. Warframe

Warframe is a free-to-play co-op action game set in a sci-fi universe. Players take on the role of Tenno, ancient warriors who must fight against various enemies to protect the solar system. Warframe offers a unique blend of action, exploration, and customization. There are tons of weapons, abilities, and gear to collect, and the game is constantly being updated with new content. If you're looking for a fun and engaging co-op experience, Warframe is definitely worth checking out.

4. Brawlhalla

Brawlhalla is a free-to-play platform fighter that's similar to Super Smash Bros. It's a fast-paced, action-packed game with a roster of colorful characters. Brawlhalla is easy to pick up and play, but it has a surprising amount of depth. There are tons of different weapons and abilities to master, and the game is constantly being updated with new content. If you're looking for a fun and competitive fighting game, Brawlhalla is a great choice.

5. Destiny 2

Destiny 2 is a free-to-play first-person shooter that puts you in the role of a Guardian tasked with protecting the Last City on Earth from various alien threats. It's a visually stunning game with a vast world to explore and tons of weapons and gear to collect. The game is constantly being updated with new content, including strikes, raids, and other activities. If you're looking for a fun and challenging multiplayer shooter, Destiny 2 is a great option.

6. Apex Legends

Apex Legends is a free-to-play battle royale shooter that combines the fast-paced action of games like Call of Duty with the strategic gameplay of games like Fortnite. It features a unique character roster, each with their own unique abilities and playstyles. If you're looking for a fun and challenging battle royale game, Apex Legends is definitely worth checking out.

7. Counter-Strike: Global Offensive (CS:GO)

CS:GO is a classic first-person shooter that's still going strong. It's a fast-paced, action-packed game with a focus on teamwork and strategy. There are two main game modes: Terrorist Hunt and Bomb Defusal. In Terrorist Hunt, terrorists must plant a bomb while counter-terrorists must stop them. In Bomb Defusal, counter-terrorists must defuse a bomb while terrorists try to stop them. CS:GO is a great choice for anyone looking for a challenging and competitive multiplayer experience.

8. Minecraft

Minecraft is a sandbox game that lets you build anything you can imagine. You can explore a vast world, collect resources, craft items, and build structures. The game is also incredibly popular for its multiplayer mode, which allows you to play with friends online. You can explore together, build together, and even battle together. Minecraft is a great choice for anyone looking for a creative and collaborative multiplayer experience.

9. Stardew Valley

Stardew Valley is a relaxing farming simulator that lets you escape to the countryside and build your dream farm. You can grow crops, raise animals, fish, mine, and even start a family. The game also has a robust multiplayer mode that allows you to play with friends online. You can work together to build a farm, share resources, and even get married. Stardew Valley is a great choice for anyone looking for a relaxing and collaborative multiplayer experience.

10. Among Us

Among Us is a social deduction game that puts you in the role of an astronaut on a spaceship. One or more of the players is a traitor who's trying to sabotage the mission, while the other players must try to figure out who the imposter is. Among Us is a fun and suspenseful game that's perfect for playing with friends. It's a great way to test your social skills and see if you can catch the imposter before it's too late.

These are just a few of the many great free games available on Steam that you can play with your friends online. So grab some friends, pick a game, and get ready to have some fun!