The listing, The Square Key (Steam Key) has ended.
https://store.steampowered.com/app/1381880/The_Square_Key/
ABOUT THIS GAME
The Square Key is a representative of the ancient race of square keys that can open all doors and rotate the world around the Square Key. In the game you have to rotate the level and move the hero across the level to solve puzzles.
The game takes place in the world of "Koitia".
In The Square Key, events take place in an alternate universe of the BlackEye and AVA game worlds.
Game features:
Rotating a level around a square key
Jumping and fast travel
Collect coins, everyone loves coins
Open doors with a square