Ocean
StarNinjas

Adds coral reefs, fish, decorative ocean blocks and much more!

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

Poly Decor
PolySaken

My spin on decorative stuff.

Plastic Box
Starbeamrainbowlabs

Adds a recolourable plastic box. Fork of @cheapie's version with improvements.

Projectiles
Noodlemire

Adds various projectile weapons which work based off of MT 5.3.0's new collision info provided to objects' on_step functions.