How to play
- Release each moving block above the previous layer.
- Maximize the overlapping area because unsupported material is removed.
- Keep the platform wide enough to continue building upward.
What this game practices
Makes overlap and alignment visually obvious. It is mainly a timing game, so its geometry connection is informal.
How we checked it
Open-source HTML5 game reviewed in the local coolmath build for startup, primary controls, restart flow, narrow-screen fit, console errors, failed requests, and third-party network activity. Upstream telemetry is disabled in this self-hosted copy.
Open-source license and attribution
This self-hosted game is adapted from Web Games by mashukui and distributed under the MIT License. coolmath disabled upstream telemetry and records its local changes in the open-source notices.
Reviewed by coolmath Editorial Team · Updated 2026-10-09