Coreball tips.
A little timing goes a long way.

Watch where the gap is going.

A shot takes 75 milliseconds to reach the orbit. The core keeps rotating during that time, so aim for the opening that will arrive at the bottom. Early levels reward a steady rhythm. Crowded levels reward patience.

Learn what changes.

Levels 1–10 establish clockwise and counterclockwise timing. Levels 11–20 raise the speed. Levels 21–30 introduce timed reversals, and 31–40 switch between faster and slower rotations. From level 41, some patterns reverse when you launch. Later stages combine these mechanics; watch the short pattern hint above the board.

Leave useful gaps rather than squeezing every ball into the same opening. When the speed or direction changes, reassess before taking the next shot.

Practice, then chase your best.

Open Levels and choose Practice to run the same core patterns at 70% speed. Ball flight stays at 75 milliseconds. Practice records are separate from Challenge records. All 90 levels are open, so you can replay the pattern you want to learn.

Controls and quick retries.

• Tap or click the play field or Tap to launch.
• Space or Enter launches while the game is focused. P pauses; R restarts.
• Quick taps are accepted at least 65 milliseconds apart. A second ball can launch while the first is arriving.
• After a collision, tap the play field, press Space or choose Try again. The retry starts a fresh attempt.
• Leaving the tab or window pauses the game. Resume when you are ready.
• Progress saves in this browser when storage is available. No account is required.

All 90 classic levels.

These configurations are adapted from Random YangHao’s MIT-licensed Core Ball. The modern game loop, input handling and interface are independently adapted. This is not arealme’s later level set.