Beat Cube is a rhythm runner where the level is the music: every spike, gravity portal and flight tunnel sits exactly on the beat. You steer Bibo, an adorable glowing cube, through ten levels built on classical masterpieces — from Beethoven's Ode to Joy to Rimsky-Korsakov's furious Flight of the Bumblebee at 170 BPM — each freshly arranged as a chiptune track and synthesized live in your browser.
Timing works on two layers. Your tap decides survival — the jump arc has to clear the spikes — and score: land within 50 ms of the beat for a golden Perfect, chain them into combos and enter a glowing flow state. Surviving is passing the level; playing it like an instrument is how you climb the leaderboard.
Three section types keep runs fresh: classic jumping, gravity flips that drop you between floor and ceiling, and flight tunnels that trace the melody's pitch — when the tune rises, so does the corridor.
How to play
- Tap (or press Space) on the beat to jump; in flip sections a tap reverses gravity; in flight sections hold to rise, release to dive.
- Choose your difficulty per track: Easy (slower, thinner chart, one shield), Normal (checkpoints per section), Hard (faster, denser, one life — earns the master medal 🏅).
- Earn up to 3 stars per track — clear it, clear it deathless, then full-combo it — and spend stars to unlock all ten tracks.
- Crystals from every run buy skins, trails and burst effects for your cube; two hidden legendary skins await completionists.
- The Daily Remix is the same seeded variation for every player in the world — one shot at +60 crystals a day.
Tips from the leaderboard
- Use the tap test in Settings once — a well-calibrated offset turns Goods into Perfects on every track.
- Listen, don't look: the melody note is the jump cue. In Mountain King the tempo accelerates every phrase, so trust your ears over your eyes.
- Combos above 25 enter flow: each Perfect pays a +20 bonus, so protect a running combo over greedy early taps.
- Career score sums your best on every track across difficulties — a clean Easy clear on a new track beats re-grinding an old one.