Mako Mermaids Mod

Players choose a favourite character when they first enter a world through an interactive selection screen. Mermaid form is gained underwater, and a 5-second drying progress bar shows on screen when the player returns to human form. Moon Water rain turns the mermaid form off and disables positive status effects, and getting hit once also removes it. On land, the mermaid form is slow, and the player has to switch back to human form when standing in a cold biome.

Some abilities are activated with hand gestures, and a gesture tutorial is required to learn them. Rikki sets nearby things on fire during the full moon and gains fire resistance. Players can swim faster by holding C while underwater, check the current moon phase by right-clicking a bed, and fight the Water Dragon, a custom pixel-art boss whose health bar appears on screen. Many new achievements are added as well.

Mako Mermaids Mod runs on Fabric and NeoForge and must be installed on both the server and every player's client. Builds cover game versions 1.21 – 26.3 across 17 release versions, and the latest files are for 26.3 on Fabric and 26.1.2 on NeoForge. The code is released under the Creative Commons Attribution Non Commercial Share Alike 4.0 license, so it is not open source.