World Flags

World flags describe how the environment behaves inside a region: whether mobs spawn, whether fire spreads, whether water flows in from the wilderness, and so on. Unlike player flags, they are not aimed at a particular player. They shape the region itself, and every visitor is affected by them.

The defaults shown here match default-world-flags in flags.yml. Natural behavior (leaves decaying, crops growing, snow melting) is allowed by default, while destructive behavior (fire spread, explosions, wither damage) is denied. A few flags govern interactions originating outside the region, such as wilderness-pistons and wilderness-minecarts, which keep neighboring builds from interfering with your land.

The Bit column is the flag's individual bitwise value; use the Homestead Flags Calculator when you need a combined value.

Flag	Bit	Default	Description
passive-entity-spawn	1	Allow	Passive mobs (animals) spawn naturally
hostile-entity-spawn	2	Allow	Hostile mobs (monsters) spawn naturally
entity-grief	4	Deny	Entities (except creepers) damage blocks
entity-damage	8	Deny	Entities attack each other
leaves-decay	16	Allow	Leaves decay naturally
fire-spread	32	Deny	Fire spreads to other blocks
liquid-flow	64	Deny	Water/lava flows into the region from outside
explosion-damage	128	Deny	Explosions damage blocks
wither-damage	256	Deny	Wither boss destroys blocks
wilderness-pistons	512	Deny	Pistons outside push blocks into region
wilderness-dispensers	1024	Deny	Dispensers outside dispense into region
wilderness-minecarts	2048	Deny	Minecarts from outside enter region
plant-growth	4096	Allow	Crops and saplings grow
grass-growth	8192	Allow	Grass spreads
sculk-spread	16384	Allow	Sculk spreads from shriekers
player-glowing	32768	Deny	Players have glowing effect
snow-melting	65536	Allow	Snow melts
ice-melting	131072	Allow	Ice melts
snowman-trails	262144	Allow	Snow golems leave snow trails
windcharge-burst	524288	Deny	Wind charges burst on impact
copper-golems-interaction	1048576	—	Deprecated
wars	2097152	Deny	Region can be targeted for war
projectiles	4194304	Deny	Projectiles (from non-player sources)
weather-snow	8388608	Allow	Snow forms during weather in cold biomes

Spawner Exclusion

By default, mob spawners are exempt from the spawn flags, so spawner-based farms keep working even when passive-entity-spawn or hostile-entity-spawn is denied. This behavior is controlled in flags.yml:

flags-configuration:
  exclude-spawners: true

• true (default): Mobs from spawners are not blocked by the passive/hostile spawn flags.
• false: Spawner mobs obey the spawn flags like any other mob.

Changing World Flags

Set a flag with /hs flags world [flag] [allow/deny], or edit default-world-flags in flags.yml to change the starting state for newly created regions. See Flags Overview for details.