Universal geometry realm
paramat

Create worlds of varying shapes

The Build Spawner
Thunder1035

Gives build spawner for spawning builds which makes city creation easy

Railbuilder
rlars

This mod allows you to plan and build tunnels and rails for Advtrains.

Tunnelmaker
kestral

Easily create arbitrarily curved tunnels, paths, and bridges.

Itemshelf
zorman2000

Generic item shelf with 3D items on display

Simple Xray
MikeRedwood

Makes stone and desert stone see through, also works with nether mod

Badass Mech (or cool mech)
Soundwavez

An addon that adds a badass mech, or “BAM” (this is a cool mech if the name is in any way confusing).

Map Tools
Calinou

Adds various special versions of normal blocks, tools, and other map maintainer tools.

Cave Explorer
Hume2

An utility for cave exploring in creative

Japanese_letters_modpack
ofg

Japanese hiragana blocks

More TNT
mittelmaessigercoder2

Adds more TNT

boomstick
fluxionary

a tool for testing the behavior of tnt

Modern Ish
thomasthespacefox

A collection of modern-ish odds and ends.

Ephesus
Horka

Added ancient architectural blocks from the Mediterranean

More Stones
Blocky Player

Provides a variety of educational and decorative minerals and rocks.

Cones: Traffic and Training Cones
ClassicAdam

Cones. Various use traffic cones and training cones. 3 sizes, 10 colors, 30 cones in total.

Infinite Chest
Dragonop

Adds a configurable chest that gives an infinite amount of something.

blackhole containment box
Soundwavez

cool swirvy gravitational blackhole boxes, that can be used to "ahnialate" enemy bases, or for "deforestation" aah i love abms! (extra dramatic!))

Pixelart
Linuxdirk

Nodes for pixelart grouped in color palettes

vexcazer
AiTechEye

Ultimate build+mine & admin tool

Invisible Wall
X17

Adds a simple invisible block

challenge
josegamestest

challenges to create route challenges or to train flight

tides & floods
Lemente

[WIP] [Warning: read full description] Adds the /sealevel command to rise/lower the sealevel.

Modern House
Horka

Add decoratives blocks for a modern house

Minetest Game Plus
Wuzzy

Adds various simple decorative blocks, doors, panes and other items, focusing on snow, ice, luxury, bamboo and more.

Advtrains Platforms
W3RQ01

Provides additional platforms for advtrains, large mod support. Originally written by Och_Noe, small contributions by Blockhead and W3RQ01 is taking it a step further by adding more stuff.

Paintings Library
JoeEnderman

A simple paintings library for MTG and potentially others in future.

Dyed Water
erov

Dyed water for mtg

Claymore
GigaByte

adds a powerful sword capable of deforming the ground **beta**

Ghost Block
Blocky Player

Adds blocks that you can walk through. Build traps, hidden rooms and more!

Blood Bane Sword
Blocky Player

OP sword for moderators. In memory of an old teacher, who had a mod similar to this on a private server.

Rainbow Source
Shara

Adds coloured water.

Meseconometer
DS

Device to meassure time of mesecon signals in globalsteps

Node houses
MatyasP

Node houses is a mod by MatyasP that adds one-node block of houses, for crafting using items from mode default.

Poly Decor
mt-mods

My spin on decorative stuff.

Block In Block
TumeniNodes

A silly mod to spark creativity

WorldEdit Wall Block
SkyBuilder1717

Adds block and item for making big structures easily as possible.

GC Gamemode
stellarorion

Easily switch between the survival and creative inventory

MathPlot
kyleclaassen

A tool for constructing mathematical curves/surfaces/solids.

Drawstruct
Xenon

Draw or generate random structures