What is a free pc game that everyone should get?

Halo 3 multiplayer ported to pc, completely community run. We could use more players. Edit: Just to answer some general questions: It started out as a Microsoft sanctioned Russian free to play online shooter with play pay to win elements. Some people got their hands on the game files (which were free anyway, nothing illegal here) and made an offshoot of it with that used user-run servers. The game is a port of Halo 3 multiplayer to pc with some changes (new spartan and weapon textures, sprint, no dual-wielding or equipment). It plays pretty well (it's a port of an xbox 360 game, not much of a suprise), and is legal. I prefer it to Halo Forge because it has dedicated servers and its is much easier to jump into a game with the built in server browser. There are visual (Halo 3 spartans and weapons for example) and gameplay (flatgrass) mods available, but I don't remember where. Edit 2: The original Russian version has since been cancelled, but the community run version is still going. There is no grifball, but there is fatkid and a variety of other Halo 3 modes. It's pc windows only, sorry linux and mac users. You can play with a controller or with keyboard and mouse. Edit 3: Check the subreddit sidebar for download information. Great, there's now 5x as many people playing as usual and I'm too busy to play this week.

/r/AskReddit Thread