Chest

Verified against the spelunky.ai port v0.1.10 on 27 October 2026.

Opened, it spills out a handful of gems, worth from $200 each on the Mines' levels, and sometimes a big one; but now and then it's a trap that throws out a lit Bomb. It's heavy, like a Crate, and stays where it is, open, once it's been opened.

Pressing up and the attack key while the player stands at a closed Chest opens it: its lid opens, and it stays, open, for good ^[2]. What comes out is thrown up at 2 pixels a step and up to 3 to either side ^[3]:

The bomb's test is that the level number is above 0, and the Tutorial is level 0 ^[7]. In the clip, a Chest opens into four gems, an emerald, a sapphire and two rubies, which the player walks over and collects ^[8].

A Chest is heavy: the player carries it higher than other items, and throws it at 4 pixels a step plus his own speed, rising at 2, or at 4 upward ^{[9] [10]}. Thrown faster than 2 pixels a step, it hurts a monster as any thrown item does ^[11].

• Level generation, in every area: in a nook one block high with a wall beside it, a 1 in 15 chance, once the rolls for a web, the Udjat Eye's locked chest (on the level that has one) and a Crate's 1 in 10 fail ^[12].
• The Temple: some of its rooms have a tile that's a Chest or a Crate, one chance in two each ^[13].
• Olmec's Lair: a 1 in 15 chance on some of its tiles, the first of their rolls ^[14].
• The Tutorial, which has one ^[15].
• The level editor's c tile ^[16].

• Bombs. An explosion throws a Chest away from it without breaking or opening it ^[17].
• Shopkeepers. A trap's lit bomb doesn't anger a Shopkeeper it's near, where one the player lights does: the trap lights it without marking it armed, and only an armed bomb angers him ^{[18] [19]}.
• Exits. The player sets down a heavy item, a Chest among them, when he takes an exit, so a Chest can't be carried to the next level ^[20].

• A Chest that turns out to be a trap gives 40 steps to get clear of its bomb, which is thrown up out of it.
• A Chest can be carried before it's opened, so its gems, or its bomb, come out where the player sets it down.

• The lifetime count of chests opened goes up on every press of up and the attack key at a Chest, before the code checks that it's closed, so an open Chest counts again each time. It's only written to the game's statistics file: the code that would show it is switched off ^{[21] [22]}.
• A trap Chest plays the sound of a trap rather than the Chest's own ^[23].