Idle auto-combat games.
A PvP auto-battler built on inventory Tetris. Buy items, arrange them well, then watch them fight.
Async-PvP castle-combat autobattler in a fantasy pixel-art world.
Build a hero party, send it into the catacombs, and let it grind millions of skeletons into loot.
A pocket-sized monster-taming auto-battler that grinds away in the corner of your screen while you get on with something else.