Shimeji Pet — Anime Pet

Shimeji Pet puts small anime characters on an overlay above every other app: they walk, climb, and react when you tap or drag them. You can run up to six at once while keeping animation smooth and battery use low.

The gameplay layer adds trees to plant, fruit to harvest and pets to feed — they gain XP, level up and unlock new behaviours — plus a gacha system for collecting rarer characters. Size, movement speed and pet count are all adjustable.