Place the blocks, clear the lines, get deeper than you did last time. Lum's lantern reaches exactly as far as you are careful.

A dive, the map, the collection, and a species being studied.

What it is

An 8×8 board, three pieces in the tray, and no clock anywhere. Every line you clear is metres of depth. When nothing fits any more the dive is over and only the record remains — which makes the record yours and nobody else's.

• An endless dive with no timer; four lines in a row shake gear loose from the seabed
• Levels with objectives, and map chapters that open by depth rather than by a checklist
• Four zones — reef, coral, ice, abyss — each changing the board under you
• Twenty-five sea creatures to collect; the ones you have not found stay silhouettes
• Six languages: English, Russian, Spanish, Portuguese, German, French
• Plays entirely offline

Straight about data

No sign-up — the game does not know your name. Progress lives on your device; there are no servers of ours. Anonymous statistics and crash reports go through Firebase, and one switch turns both off, at the moment you flip it rather than at the next launch. Full privacy policy.

Straight about money

Gems are bought with money; coins are only played for, and neither turns into the other. Chests are bought with coins, and the odds are printed on the chest before you buy it.

Rewarded videos are watched on purpose, in exchange for carrying on. Between runs there is sometimes a short ad — never in your first three dives, never more than one every second run, and never on top of a personal record.

Support

Questions, bugs, ideas — write to dmitrii.raev@gmail.com. If the game crashed, include your device model and OS version; that is usually enough. Common questions are answered on the support page.