Core Keeper Codex
1.2.1.5 · verified 2026-09-07

Seasonal content

The game defines 7 seasons and ships 83 objects tied to them. Time-limited content is the first thing to disappear from the internet once an event ends, so this is a dated record of what exists rather than a live event calendar.

How seasons actually work

A server picks its season from the system date unless you override it with -season <name> — the valid values are exactly the ones below. That argument is in the developer's own reference, so a season is not something you have to wait for. See the server page.

Easter

19 objects

Halloween

6 objects

Christmas

42 objects

Valentine

15 objects

Anniversary

1 objects

Easter (19 objects)

ObjectRarityLevel
Easter Azeos TrophyEpic—
Easter Bird BossCommon8
Easter ChestRare—
Easter Chest With EffectsRare—
Easter Egg ClayUncommon—
Easter Egg DirtUncommon—
Easter Egg Flower PotCommon—
Easter Egg LampCommon—
Easter Egg NatureUncommon—
Easter Egg StoneUncommon—
Easter GarlandCommon—
Easter Garland FrontCommon—
Easter Garland LeftCommon—
Easter Garland RightCommon—
Easter Golden EggRare—
Easter Meadow StoolCommon—
Easter Meadow TableCommon—
Easter PedestalCommon—
Easter PillarCommon—

Halloween (6 objects)

ObjectRarityLevel
Halloween Goodie BagUncommon—
Haunted Hive MotherCommon6
Hive Halloween Boss Summoning ItemEpic—
Hive Halloween Boss TrophyEpic—
Hivemother Halloween Boss ChestRare—
Hivemother Halloween Boss Chest With EffectsRare—

Christmas (42 objects)

ObjectRarityLevel
Christmas Brute TrophyRare—
Christmas Caveling TrophyUncommon—
Christmas FireplaceCommon—
Christmas Light Decoration Blue Back WallCommon—
Christmas Light Decoration Blue Front WallCommon—
Christmas Light Decoration Blue Left WallCommon—
Christmas Light Decoration Blue Right WallCommon—
Christmas Light Decoration Mix Back WallCommon—
Christmas Light Decoration Mix Front WallCommon—
Christmas Light Decoration Mix Left WallCommon—
Christmas Light Decoration Mix Right WallCommon—
Christmas Luxury PresentRare—
Christmas PresentUncommon—
Christmas Shaman TrophyRare—
Christmas Shrooman TrophyUncommon—
Christmas Slime TrophyUncommon—
Christmas SnowmanCommon—
Christmas Spiked Slime TrophyUncommon—
Christmas StoolCommon—
Christmas TableCommon—
Christmas TreeCommon—
Christmas Wall Decoration A Back WallCommon—
Christmas Wall Decoration A Front WallCommon—
Christmas Wall Decoration A Left WallCommon—
Christmas Wall Decoration A Right WallCommon—
Christmas Wall Decoration B Back WallCommon—
Christmas Wall Decoration B Front WallCommon—
Christmas Wall Decoration B Left WallCommon—
Christmas Wall Decoration B Right WallCommon—
Christmas Wall Decoration C Back WallCommon—
Christmas Wall Decoration C Front WallCommon—
Christmas Wall Decoration C Left WallCommon—
Christmas Wall Decoration C Right WallCommon—
Christmas Wall Decoration D Back WallCommon—
Christmas Wall Decoration D Front WallCommon—
Christmas Wall Decoration D Left WallCommon—
Christmas Wall Decoration D Right WallCommon—
Christmas Wall Decoration E Back WallCommon—
Christmas Wall Decoration E Front WallCommon—
Christmas Wall Decoration E Left WallCommon—
Christmas Wall Decoration E Right WallCommon—
Christmas Work BenchUncommon—

Valentine (15 objects)

ObjectRarityLevel
Valentine CandlesCommon—
Valentine ChestUncommon—
Valentine Floor PetalsCommon—
Valentine LetterUncommon—
Valentine NecklaceUncommon5
Valentine Painting Back WallCommon—
Valentine Painting Front WallCommon—
Valentine Painting Left WallCommon—
Valentine Painting Right WallCommon—
Valentine PlushieCommon—
Valentine PresentUncommon—
Valentine RingUncommon5
Valentine RugCommon—
Valentine Wall Hearts Back WallCommon—
Valentine Wall Hearts Front WallCommon—

Anniversary (1 objects)

ObjectRarityLevel
Anniversary CakeUncommon3

Objects are matched by the season name in the game's own identifier, so this is what the files carry rather than a curated list. Verified against 1.2.1.5.