23 courses, one clock, and the ghost of your best run.

A platformer that runs in a browser tab. There are 23 parkour courses on a difficulty ladder, a lap racer with bikes on a neon loop, and an arcade of 11 small games in cabinets you walk up to inside the world. No download, no store, no account needed to start.

Every course is timed. Finish one and you get a medal and a ghost of the run — a replay of yourself that you then race against on the next attempt, which is a far better opponent than a number. Coins earned from playing buy characters, and they buy nothing else; there is no real money anywhere on this site.

It is built and published by Muhammad Ali Akmal, and everything in it — the courses, the characters, the track, the music the cabinets play — was made from scratch rather than bought in.

The 23 courses run Tutorial → Easy → Medium → Hard → Expert → Obby, in the order they are meant to be played. The tiers are not a difficulty score attached afterwards — each one names what the course is asking for, and the course is built to ask for it. Tutorial courses teach the jump. Medium courses teach you to turn. Expert courses spend the full design margin, and the Obby tier replaces small landings with lava.

No jump anywhere is built by eye. Every gap is designed against 80% of what the character can physically clear, because a jump at 100% is a frame-perfect input and a course full of those is not hard, it is unfair. Every course is then proved finishable by a solver — including from every checkpoint, since a resume point you cannot continue from is a soft lock rather than a mercy.

How the courses are made explains all of it, and every course has its own guide with the measured shape of its route.