fall_damage

booleanJava 26.2 & Bedrock 26.32

Controls whether players and mobs take damage from falling. When false, no fall damage is dealt regardless of how far you fall.

Enable fall_damage

Fall damage applies normally — 0.5 hearts per block fallen above 3 blocks.

Java/gamerule fall_damage true

Bedrock/gamerule falldamage true

Bedrock uses falldamage (all-lowercase, no separators).

No fall damage from any height. Players and mobs land safely regardless of fall distance.

Java/gamerule fall_damage false

Bedrock/gamerule falldamage false

Default: true. Restore with /gamerule fall_damage true

Controls whether players and mobs take damage from falling. When false, no fall damage is dealt regardless of how far you fall.

Does fall_damage false also affect mobs?: Yes — mobs also take no fall damage when this rule is disabled.
What happened to fallDamage?: Renamed to fall_damage in Java snapshot 25w44a. Bedrock uses /gamerule falldamage false.