@Sempf I have a FOSS Android game I made about a year ago, a simple dice game that might scratch the repetitive-not-hard-puzzle game itch.

https://play.google.com/store/apps/details?id=com.inglogames.sigmadice

Also I've been trying the new Rainbow Six game and it's much better than I expected.

https://play.google.com/store/apps/details?id=com.ubisoft.rainbowsixmobile.r6.fps.pvp.shooter