Shrink and Growth Potions
by derexXD
Shrink and Growth Potions adds potions that make players and mobs grow or shrink, inspired by the Alice in Wonderland story.
What it does
Two potion types, Potion of Growth and Potion of Shrinkage, change the size of whoever drinks them or is struck by a splash potion. Their effects are temporary, so a size change wears off after a set time. Shrink and Growth Potions reads Mojang's scale attribute, introduced in 1.20.5, to change how large a player or mob looks and moves.
A server running it needs every connecting player to have it too. It is published for NeoForge only, for 1.20.5 and 1.20.6, with 0.0.0.1 for 1.20.6 as the latest file. The code is under the MIT License and is not open source. The author notes that a survival server used the potions as a harmless punishment for hackers and griefers, which describes one of the uses the mod was made for.
Key features
Growth potion
Drinking the Potion of Growth makes the player or a mob larger for a limited time.
Shrinkage potion
The Potion of Shrinkage reduces the size of the player or a mob for a limited time.
Splash potions
Both potions can be thrown as splash potions, so they affect other entities in the area.
Temporary effects
Size changes are set as potion effects with a duration, so they end without any manual reset.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Server punishments
Server owners can use the potions as a light penalty, since a shrunken player is not in danger and the effect ends on its own.
Adventure play
Players can use the potions to reach or hide from places that depend on the character's size.
Who it’s for: Players who want size-changing potions for fun or adventure, and server owners who want a harmless punishment for rule breakers.
Questions
Does Shrink and Growth Potions have to be installed on the server?
Which game versions does the mod support?
Do the size changes last?
More from derexXD
What the author says
On our survival server, we began using growing and shrinking as fun punishments for hackers and griefers since that seemed to mess up their hacked client systems and fly hacking. This was a harmless form of fun using the new attribute system Mojang exposed in 1.20.5, which allowed for scale to be modified. Then we…
Official listing
- Modrinth page
- modrinth.com/mod/shrink-and-growth-potions
- Owner
- derexXD
- Published
- 2026-03-29
- Updated on Modrinth
- 2026-03-29
- Facts verified
- 2026-10-15