Swamp

minecraft:swamp

Swamp data for Minecraft 26.4-snapshot-5, read straight from the game files.

Mobs that spawn here

Category	Mob	Weight	Group size
ambient	Bat	10	8
creature	Sheep	12	4
creature	Pig	10	4
creature	Chicken	10	4
creature	Cow	8	4
creature	Frog	10	random 2–5
monster	Spider	100	4
monster	Zombie	95	4
monster	Zombie Villager	5	1
monster	Skeleton	70	4
monster	Creeper	100	4
monster	Slime	100	4
monster	Enderman	10	random 1–4
monster	Witch	5	1
monster	Slime	1	1
monster	Bogged	30	4
underground water creature	Glow Squid	10	random 4–6

Climate

Temperature	0.8
Downfall	0.9
Precipitation	True
Sky colour	#78a7ff
Water colour	#617b64

Data

From data/minecraft/worldgen/biome/swamp.json.

attributes

audio/background_music	`{"default": {"max_delay": 24000, "min_delay": 12000, "sound": "minecraft:music.overworld.swamp"}}`
gameplay/increased_fire_burnout	true
gameplay/natural_mob_spawns	`{"argument": {"spawn_costs": {}, "spawns_by_category": {"ambient": [{"type": "minecraft:bat", "count": 8, "weight": 10}], "creature": [{"type": "minecraft:sheep", "count": 4, "weight": 12}, {"type": "minecraft:pig", "count": 4, "weight": 10}, {"type": "minecr…`
visual/sky_color	#78a7ff
visual/water_fog_color	#232317
visual/water_fog_end_distance	`{"argument": 0.85, "modifier": "multiply"}`

carvers ["minecraft:cave", "minecraft:cave_extra_underground", "minecraft:canyon"]

downfall 0.9

effects

dry_foliage_color	#7b5334
foliage_color	#6a7039
grass_color_modifier	swamp
water_color	#617b64

features [[], ["minecraft:lake_lava_underground", "minecraft:lake_lava_surface"], ["minecraft:amethyst_geode"], ["minecraft:fossil_upper", "minecraft:fossil_lower", "minecraft:monster_room", "minecraft:monster_room_deep"], [], [], ["minecraft:ore_dirt", "minecraft:ore…

has_precipitation true

temperature 0.8

Extracted from Minecraft 26.4-snapshot-5 on 22 October 2026. 9Minecraft is not affiliated with Mojang or Microsoft.