Here is a list of my favorite games, most of them coming from Valve
Half-Life: Alyx - Possibly the most immersive experience I've had in a game. Everything from the graphics to the story and music is just perfect.
CS:GO - Good and popular FPS game with a native Linux build and good Gameplay, unfortunately I've encountered a lot of cheaters recently but hopefully that'll be fixed in CS2
Team Fortress 2 - Really fun game to play, but unfortunately it's pretty much abandoned
Dota 2 - Best MOBA in my opinion, the recent New Frontiers update included a lot of changes, but unfortunately it's still really hard for a new player to get into the game (Bad Matchmaking).
Here is a list of my favorite games, most of them coming from Valve
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