Very cool proof-of-concept.
The puzzles were a bit simple, but the presentation was great.
There is a game-breaking. bug right after the second rock-moving scene (after the earthquake). You move upwards to change to the next scene, but you land on top of a wall between land and water. If you continue to move up (which is likely, since you were pressing up to enter the scene) you walk north of the wall and are trapped outside the playable area.