Bosses

22 boss entities in Core Keeper 1.2.1.5, with health read from the game files and drop tables carrying the real selection weights.

Boss	Level	Health	Drop entries
Glurch the Abominous Mass	2	2,459	19
Boss Larva	4	8,061	21
Malugaz the Corrupted	6	14,513	27
King Slime	6	24,188	—
The Hive Mother	6	24,671	23
Haunted Hive Mother	6	24,671	—
Azeos the Sky Titan	8	31,813	18
Easter Bird Boss	8	31,813	—
Ivy the Poisonous Mass	8	39,155	18
Morpha the Aquatic Mass	10	84,551	20
Omoroth the Sea Titan	11	90,772	15
Scarab Boss Bomb Scarab	12	2,535	—
Igneous the Molten Mass	13	160,799	16
Ra-Akar the Sand Titan	13	160,799	16
Pyrdra the Fire Titan	15	136,992	20
Druidra the Wild Titan	15	136,992	19
Crydra the Ice Titan	15	136,992	19
Queen of the Burrowed Sands	15	228,320	8
Robot Boss	16	144,414	9
Oblidra the Void Lord	17	160,092	7
Core Commander	17	465,385	13
Urschleim	18	249,826	11

Ghorm the Devourer

Ghorm has no single boss entity in the game files. Nothing named Ghorm carries health; the encounter is built from separate segment entities. This is the most likely reason other databases omit it from their boss index entirely. We list it here because players search for it constantly, and we say plainly what the files do and do not contain rather than inventing a stat block. What the files actually show.

How to read a drop table — and why other sites' percentages are too low

Each boss table draws a fixed number of unique drops, weighted, without replacement. So an item's real chance is not its weight divided by the total: several draws happen, and each one is another shot at it.

The difference is not small. Azeos draws 6 unique items, so Scarlet Ore at weight 0.17 is 85.5% per kill, not the 21.5% that weight-over-total suggests — and the necklace is 29%, not 3.8%. Any site quoting the single-draw share is understating real drop rates roughly four-fold.

We publish the true figure. It is computed exactly rather than simulated: sampling without replacement is equivalent to an exponential race, which makes the probability a definite integral we can evaluate directly. The implementation is checked against brute-force enumeration of every possible draw sequence on every build, agreeing to about one part in a billion.