0 m · the surface

One lamp against the deep.

A calm deep-sea collecting game for iPhone. You go down on a finite supply of oil, and you decide when to turn round.

The dive screen: lamplight falling through dark water onto a pale jellyfish, with the move buttons priced in oil below.

60 m · the shelf

Every move is priced on its button.

A dive starts with a full lamp, 120 oil. Each move burns some — DESCEND · 4 oil · 4 oil to return — so you always know what going on costs and what coming home will cost after it. The rare animals are deep, and deep costs more to climb out of.

The lamp turns amber well before the oil runs out, and when it does run out it names what you would lose. A blackout takes part of one dive's catch, never your Book.

Put the phone down mid-dive; nothing moves until you do. There is no clock anywhere in the game.

200 m · the twilight

The chase is color.

Every animal you land rolls its own hue from the whole wheel and keeps it for ever. The Book lays your specimens along each species' color rail, so the colors you are still missing show as gaps — and a gap is a reason to go down again.

Forty-one species, each a painted plate. The drop odds are published in-app to the tenth of a percent, and your rig's effect is printed beside them.

The Book: a ledger of deep-sea species, each with a rail of colored dots showing the hues collected so far.

550 m · the midnight

What it is not.

No advertising, and nothing that tracks you.
No energy, stamina, or daily streak. Nothing expires.
Every species, depth, and color is free to reach by playing.
The shop sells how things look — a binding, a lamp painting — and nothing that changes a roll or a price.

Made for one hand, in portrait. Works with larger text; Reduce Motion is respected.

1,200 m · the trench

Test the water.

The game is in beta on TestFlight. If you would like to dive early and say what you find, leave an address — you will get an invite when the next round opens, and nothing else, ever.