@PerfectDark Here are some that I've found on F-Droid. I don't know if they're on the Play Store, though.

* Vector Pinball: an oldy, but a goody.
* PipePanic: a Pipe Dreams clone.
* FlowIt!: color in all the squares. It's harder than it sound.
* Ball2Box: get the ball through the obstacles, and get all the stars, in one go.
* IED: Minesweeper, but in 3D. Made with the Godot Engine.
* Gurgle: a Wordle clone.
* Roboyard: Move the robots around a maze to where they need to go.