Marble Moon
Forge a DARK level-4 moon in the LEFT tube and a DARK level-3 moon in the RIGHT tube. Equal-level top moons merge only when their phases are OPPOSITE (☀ light / ☾ dark); the result keeps the incoming moon’s phase. Tap a tube to launch the next moon. Two Eclipses flip the TOP moon in every nonempty tube at once. The middle tube is a buffer; each tube holds at most three unmerged moons. All eight supplied moons must be used.
Controls & scope
Tap the board or named controls. Tab and Enter/Space operate buttons; R restarts. The game-specific failure conditions are described above; terminal results lock input until Restart.
This is an original compact mechanic study, not a copy or full reproduction of the reference game. Research and scope are documented in README.md.
Original code & procedural visuals · Private local collection