A prototype puzzle platformer with 13 levels. It explores the use of alternate worlds/views on the same level as the main game play mechanic.
It's a complete game, but with the limited space, difficulty ramps up pretty quickly to try out different puzzle ideas and game mechanics.
Arrow keys to move, up or C to jump.
The X key (or other button) comes into play a bit into the game, I won't give it all away.