You may know Unblock Me by its real-life name, Rush Hour. The setup is simple: you have a 6×6 grid of blocks that can only move in the direction of their length. Your goal is to get the red block out of the grid.

It’s a puzzle game, obviously, and it’s harder than you might expect — but in a fun way. It really pushes you to think outside of the box, and each victory is quite satisfying.

Play Challenge mode on iOS or Android and submit a screenshot of your highest lvl completed.