Link to download a simple prototype project. Available for Windows only.
Controls: AWSD = Move/Jump Right Mouse = Throw Hammer Right Mouse (while hammer in air) = Teleport to Hammer's location Left Mouse (while hammer in air) = Create platform Left Click (on platform) = Select platform Left Click (anywhere but a platform) = Deselect selected platform q (while platform selected) = Delete platform q (no platform selected) = Delete all platforms
If you need a goal, you can try to collect all the tomes. The main point of this prototype, however, is to play around with the movement mechanics.