Juha Nether
Juha (CraftPlay777)

Nether dimension with portal, cursed and soulless wood, and biomes

Mines
ApolloX

Regenerating terrain

golden lava
Giga_M

add golden lava

Lava Particles
karlexceed

Adds some spark particles to lava pools

Trudged
Bas080

A simple mod that converts walked-over soil nodes to dirt.

Kill history hud
Giga_M

adds a death history on the screen

CSperson's Simple Pebbles
CSperson

A very simple mod that adds natural detritus. Doesn't do much besides that.

Mud
Blocky Player

Adds stylish mud blocks and even blocks you can walk through. Setup traps, secret rooms and much more!

Tree Particles
SuperStarSonic

Adds particles of falling leaves when you punch a tree