A quick, simple game with a fun and fairly creative mechanic to it. I enjoyed the music, the way the game's rooms communicated gameplay concepts (the mice steal your key, the orange blocks can teleport the key etc) and the stunning revelation the player character is shaped like a keyhole. Some of the late-game platforming was frustrating and a bit of a departure from the puzzle-metroidvania the game had been up until that point but not too unbearable. Good game.