Pythagoras' Perpetual Motion Machine

Pythagoras' Perpetual Motion Machine is a puzzle game set in a tower that pierces the heavens. Guided by a mysterious voice, you use contraptions to send boulders along perpetual routes and make your way to the top.

Build motion machines

Each stage combines devices such as boulder-ejecting switches, elevators, catapults and balance scales. Move objects, press switches and position the contraptions so their effects send the boulders around a repeating route. You can also move around the stages yourself as you work out how the devices interact.

The tower's puzzles

The game has 40 stages, including difficult puzzles. Every stage offers hints and the option to skip, and the game imposes no penalties or restrictions. It does not require fast aiming or precise control; solving the puzzles relies on your knowledge and reasoning.

Special monuments in the tower bear messages and art. As you solve puzzles, you can consider what they mean, who you are and what purpose the tower serves.