This mod aims to add just a few more biomes to the worldgen, for just a bit more variation, without these biomes taking away from the vanilla biomes.

This mod adds 1 land biome, 1 shore biome, 2 ocean biomes, 2 cave biomes and 2 nether biomes.

Jacaranda Plains:

A calm plains-like biome with IRL jacaranda inpired trees and the purple arum.
A combination of the plains, acacia and cherry biomes, with a purple palette.
This biome introduces a new flower and the Jacaranda wood set.

Glacial Forest:

A biome found near frozen shores with tall and icy trees.
A Minecraft mangrove inspired tree with roots growing to the bottom of the shore.
This biome introduces the Glacial flower along with the Glacial wood set.

Stone Spikes:

A biomes designed to give more varied ocean floors.
This biome introduces no new blocks.

Prismarine Spikes:

Another biome made to give more varied ocean floors.
This biome has both spikes and sparse coral.
This biome introduces Cracked Prismarine (drops prismarine shards), Shining Prismarine (drops prismarine crystals) and the Cobbled Dark Prismarine block set (can be crafted into Dark Prismarine).
These prismarine spikes give another way to abtain all prismarine blocks.
Cracked Prismarine and Shining Prismarine can be obtained with silk touch and crafted.

Undergarden:

A dark-ish and lush-ish biome with grayish plants.
In here there is quite a lot of vegetation and quite a lot of stone patches.
Introduces Cave Berries (with steamed and nut varient) and Cave Flowers (growing on the ceiling).

Frozen Caves:

Meant to give more varried caves.
Locate more ores trough the seetrough floor and ceiling. Mine to those ores without inventory clutter (except if you use silk touch).
Introduces Cobbled Ice with its block set and Icicles.

Colorful Caves:

To give a bit more color to the depths.
The upper caves have Magenta and Light Gray Concrete and their Powders, while the lower caves have Purple and Gray Concrete and their powders.
Introduces the Colorful Vents which, when active, give Night Vision (or Regeneration when waterloged).

Ashen Forest:

Meant to give the Nether a bit more variation.
A pale biome filled with simple vegetation.
Introduces the Ashen wood set.

Pinklar Plains:

Meant to give the Nether a bit more variation.
A mostly empty biome meant to be similar to the Nether Wastes.
Introduces the Pinklar blocks (similar to basalt).

Mod status: complete.

Feel free to comment ideas or bugs.
Feel free to put into a modpack.
Feel free to port the mod over to another version/modloader/site/app.

Simplicity Biomes