Gunpoint. Story based detective game where you solve a murder. Gameplay mechanics make you feel like a badass. You can pretty much finish it in a single sitting but its great.

Heat signature. A stealth based top down bounty hunter game with roguelike elements. Really well done. Made by the same guy that made Gunpoint.

Neo scavenger. A murder hobo roguelike with a surprisingly long storyline.

Super house of dead ninjas. Great fast paced platformer where you’re a badass ninja. Great to pick up and play in short bursts.

Fez. 2D exploration platformer with to change the perspective. Pretty chill and has a cool art style

More well known games that I’ll list anyway in case someones looking for some awesome ones:

Super meat boy

Project zomboid

FTL

Celeste

Crypt of the necrodancer

Enter the gungeon

Spelunky

Noita. Saw it mentionned in this thread and I am seconding this. Great game. But brutal as fuck.

Cave story. A classic. And it’s free.

Owlboy. Took the developer like 10-15 years to make. I’ve heard good things but I’m only just starting to play it.

Also pro tip: if you want more recommendations go look at what speedrunners are playing. People that spend that much time playing a single game over and over generally choose very good games to play.