Locks
Sokomine

Shared chests, doors, furnaces and signs - with keys

Missions
BuckarooBanzai

Adds blocks to create missions with rewards, timeout and penalties.

Incredible Maze Generator
orwell

This mod is a maze generator

PuzzleMap
Warr1024

Puzzle/Adventure Map System using Node Protection Mechanic

Quiz - Play Challenge
snowyu

This mod requires players to answer question before they can play. If you answer correctly, you will get a award and continue to play, otherwise you will not be able to play.

World of Life
LMD

Simulates 3D cellular automata in your entire world. WARNING: you will lose items & buildings in your world.

Cellular Automata
LMD

Simulates 3D cellular automata