Super Tux Kart and MineTest. Both are on fdroid and have amazing modding capabilities . I will say modding them is part of the fun too.

I’ve wasted too many hours on Shatter Pixel Dungeon.

You can get the source for OG Pixel Dungeon off GitHub, but there’s a maintened version on the F-Droid store (Shatter Pixel Dungeon). There’s some other free versions floating around too, not sure if they’re on the F-Droid store too, but I know they’re on the play store.

• Forkys

• Lexica

• 2048

• Sudoku

• Minesweeper

• Anuto TD: very underrated

• Pixel Wheels

• Andors trail: only played a bit but hear its good

Vector Pinball is solid for sure.

I can’t say I’ve tried a ton but in searching for the same thing, I found Mindustry. It scratched this weird StarCraft-esque tower defense game that I didn’t know needed scratched.

Get Lemuroid!!

There’s an android fork of Endless Sky:
Main game - https://endless-sky.github.io/
Android github - https://github.com/thewierdnut/endless-mobile
Android repo - https://f-droid.org/packages/com.github.thewierdnut.endless_mobile/

Mindustry https://anuke.itch.io/mindustry

Egyptian Mouse Pounce is a pretty fun card game.

Flowit (Fill all boxes with the color of their border) https://f-droid.org/packages/com.bytehamster.flowitgame/

2048 Open Fun Game (2048 game with AI, Replay, History and other fun features, Open Source, no ads) https://f-droid.org/packages/org.andstatus.game2048/

Minesweeper - Antimine (A puzzle game where you search for all hidden mines. ) https://f-droid.org/packages/dev.lucanlm.antimine/

Shattered Pixel Dungeon (A roguelike game based on Pixel Dungeon) https://f-droid.org/packages/com.shatteredpixel.shatteredpixeldungeon/

Blockinger (Tetris clone) https://f-droid.org/packages/org.blockinger.game/

Unciv, Rabbit Escape