Beyond All Reason was recently recommended to me in an ask Lemmy Thread. Can confirm it is a great game if you’re into real time strategy (Free and Open Source). Naev and Endless Sky - Single player 2D open world space exploration, trading with some interesting storylines (Both are also FOSS and inspired heavily by the Escape Velocity series of games), I have spent ma y hours playing these games. Mindustry is another fun one people are recommending, takes elements of Factory Building games and Real Time Strategy (FOSS).

Venturing into the non-foss side of things, most games seem to work, check protondb before purchasing for Linux compatiblility. Steam is pretty good on Linux. I’ve found Terraria to be quite addictive which natively supports Linux. Starbound is also pretty good but I haven’t touched it for a few years because the storyline is rather a cliche and just not interesting at all to me (I did finish it).

Another option for games is emulation.

If your gaming laptop has an NVIDIA GPU as well as integrated (usually Intel) you may need to launch your games with certain environment variables incase they default to the integrated graphics. In my experience with hybrid graphics Wayland works quite well as the desktop will be run on the integrated graphics.