Super CoreBall
A core spins in the center. Click to launch a ball — it locks on and orbits with the core. One mistimed shot hits an existing ball and the level resets. 20 levels, five tiers, escalating chaos.
How to play
Click anywhere on the canvas — or press Space — to launch a ball upward into the spinning core. The ball locks on at the 6 o'clock position and rotates with the core from that moment. Each level has a fixed number to land: 3 on level 1, 14 on level 20. Land on a ball already orbiting and the level resets immediately. Complete every ball in the level to advance.
The five tiers
Pick a tier from the selection screen — all five are open from the start.
- Learning (1–6) — steady constant rotation. The core never changes speed. Pure timing.
- Rhythm (7–10) — a single sinusoidal oscillation. The beat is learnable once you feel it.
- Chaos (11–14) — two frequencies at a golden-ratio interval. The combined pattern mathematically never repeats.
- Mayhem (15–18) — dual-frequency unclamped. When both waves trough together the core briefly reverses direction.
- Nightmare (19–20) — triple frequency at 5+ rad/s. Direction snaps happen frequently and without warning.
Press Esc during a run to return to tier select at any time.
Core expansion
If you pack balls too tightly and leave no angular room for the next shot, the core automatically expands — up to three times per level. On each expansion the core grows outward, all existing balls redistribute to even spacing, and a clear arc opens for your remaining shots. The red danger arcs on the orbit ring and the colour of the preview ball at the bottom tell you in real time whether the current rotation is safe to fire.
What it trains
Super CoreBall isolates one of the hardest elements of competitive mouse control: precise single-click timing against deliberately unpredictable motion. The higher tiers use non-repeating multi-frequency oscillation — the same kind of irregular pattern handling that separates good from great in fast-paced games. If you want to verify whether your hardware is keeping up, run the polling rate test first — a mouse stuck at 125 Hz has 8 ms of built-in latency that makes tight timing windows harder than they need to be. Pair with the aim trainer and reaction time test for a complete skill picture.