Don't actually have the game (yet), but it came out today (iOS/Android/Steam) and looks absolutely amazing.
The game is single-player, but your save game can be used on the iOS, Steam, AND Android version - cross-platform saving for the win?
Crashlands is a crafting/survival game with elements of action RPGs tossed in, an overarching storyline, etc.
Check out the game
here, on its website.