Terraria is a indie 2D survival game. It is like Minecraft, but different. You build and fight mobs + bosses. There are many items. Fun in multiplayer.

Spiral Knights is a F2P MMOG where you do many missions, and going deeper into the clockworks to get to the core. It is not so popular yet fun to play.

Garry's Mod is a physics sandbox game. We recommend it because not only it's sandbox, it has a variety of gamemodes. It's fun to build and roleplay! :)

Team Fortress 2 is a popular Free-To-Play FPS game on Steam. We recommend this game because it is entertaining and fun to play anytime. Come join now!