Core Keeper Codex

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.