Everness
SaKeL

Adds many new biomes, items and blocks.

XaEnvironment
AiTechEye

A game that aims to contain lots of environments and things.

Wilhelmines Living Floatlands
Liil

Adds various prehistoric animals to your Floatland Zone, if you are using V7 Map Generator.

Wilhelmines Living Desert
Liil

Adds plants to the default deserts of minetest game.

Wilhelmines Living Jungle
Liil

Adds a new type of dense jungle biome to your world

Wilhelmines Natural Biomes
Liil

Adds 9 new biomes

Wilhelmines Marinara
Liil

adds water structures and coral reefs to the oceans of your world