Use ← ↓ ↑ → and Space, or tap the matching lane. Perfect: 10 points. Good: 5 points. Hits add time; wrong presses and missed notes cost 1.5 seconds. Start with 20s, bank up to 30s. Time rewards shrink as the pace increases. 10 / 25 / 50 hits unlock ×2 / ×3 / ×4 points. Every 20s brings a harder stage. Clear a stage at 90% accuracy to build a win streak. Records last until you reload or close this page. Sound and motion can be turned off below.