Ok so not an RPG in the strictest sense...
But a game where you play the role of a cat, and what do cats do? (When not asleep of course)
Swipe at everything in sight of course.
See a mouse - SWIPE!
See a shoe - SWIPE!
See a bird - JUMP AND SWIPE!
Simple one-swipe gameplay, make sure nothing gets past the cat or it is game over... and dont run out of energy otherwise the cat WILL take a nap!
And be eternally terrified of cucumbers. Can you figure out why this cat is home alone?