Fair play by design
About Mello: a puzzle that plays fair
Mello is designed to feel satisfying without timers, paid luck, or score-based piece changes. Advertising never changes the board, pieces, scoring, difficulty, or outcome.
One shared Daily
Every player receives the same deterministic 30-piece sequence for each UTC date. The first completed run is official; later runs are clearly marked as practice.
Fair Endless play
Endless uses a seeded piece bag and a deterministic safety check. It may replace a tray it cannot verify as playable, but never because of your score or purchase history.
Private by default
Accounts are optional. Firebase handles email sign-in and an optional display name, while saves, scores, streaks, and settings stay on this device and never sync to the account. Sharing starts only after you choose Share.
Calm monetization
The playable puzzle, About, and Support pages may show Google AdSense to fund development. Ads never change pieces, scoring, difficulty, the shared Daily seed, or game outcomes. The native apps currently contain no third-party ad or analytics network.
Scoring you can learn
A full row or column clears. Multiple lines and consecutive clears build a combo, but the game never changes your pieces to manufacture a win or loss.
Accessible and offline-ready
Mello supports touch, mouse, and keyboard play, plus reduced motion, sound, haptic, color-theme, and light or dark appearance settings. Once loaded, the puzzle can keep working without a connection. Signing in, verification, recovery, and account deletion require a connection.
Made independently
Mello is developed and published by Michael Schillereff. Ready to play? Open today's puzzle or visit support for help.