Control a white block. Dodge the red ones. The rules take three seconds to learn — then it speeds up, and keeps speeding up, until you lose. One mistake and it's over.
A hyper-casual arcade game with no menus in the way and nothing to unlock. It's built for the thirty seconds you have in a queue, and for the evening where you keep saying one more try.
The game collects nothing about you. No accounts, no sign-in, no analytics. Your high score lives on your device and never leaves it. Google serves the ads and its own policy governs that — the full detail is in the privacy policy.
No install, no account. It turned out better than planned: it is not a re-implementation. The rules were lifted out of the Android view into one Java module with no Android on its classpath, and TeaVM compiles that module to the page above. The Android app builds against the same module — though the release on the Play Store predates the extraction, so the phone you install it on today is still running the rules inline. Same rulebook either way; the browser one is just the one you can read.
A test drives a scripted game on the JVM and replays the identical run through the browser build, then diffs the two: scores exactly, obstacle positions to a hundredth of a pixel. It exists because the two had already drifted apart without anything noticing. A second job keeps the module byte-identical between the public repo and the app's private one, so they cannot separate quietly — the engine is open source and the story is in its README.
One difference on purpose: the phone version sells a continue through a rewarded ad. There are no ads in the browser, and free continues would make a web score mean something other than a phone score, so it has none.