Finding gems in the world of FOSS can be a difficult task if you don't know what you're looking for. However, I can easily say that my top three are Antimine, Shattered Pixel Dungeon, and Minetest.

Antimine is your typical minesweeper game but it's really well-produced and customizable. I hadn't really played minesweeper much before Antimine, but I find myself picking up Antimine pretty often.

Shattered Pixel Dungeon is an awesome roguelike that proves rather challenging. The more you play it the better you become, and sometimes you'll get some really great RNG and it just feels awesome.

Minetest on it's own isn't much of a game as much as it is a 3D block-game creation engine. It's more or less the bones that make up a FOSS Minecraft, and with projects such as Voxelibre, it is a really fantastic Minecraft alternative!

What games do y'all play from F-Droid? Feel free to mention things that come from other repos than the ones that come with F-Droid out of the box!