Hello folks,

This game is known as Toodee and Topdee.

The steam description is such:

A cosmic turbulence caused the 2D Platformer and the Top-Down Puzzler dimensions to merge! Switch between Toodee and Topdee and their unique perspectives to overcome hard-as-nails challenges, solve mind-melting puzzles and defeat huge bosses.

That means the devs deliberately messed with people's perception by having a game that switches dimensions mid- game. OH MY GOD!

Must be played to be believed!

if you are the winner, you are in for a treat.