Saving this post. I have never played but want to. Might check it out for real now.

They must be down bad

Good open source (F-Droid):
Endless Sky
Unciv
Pixel Dungeon

Good Play Store:
Knights of Pen and Paper
Swords and Sandals
Sky: Children of the Light

Theres also a new mobile Kingdom Hearts game in development thats multiplayer and action combat, honestly looks sweet.

Link?

Edit: here is the Steam page Far Far West