ASCII LION
An experimental glyph engine suite
Ander Lex Engine
make your game here
Behemoth Game Engine
A Game Engine that lets anyone become an Artist! Make Faux3D games without any modelling experience!
3D Racer System for Game Maker Studio 2
A mode-7 style setup for racing games in Game Maker Studio 2
Sprite Animation Viewer
Preview animation before using it.
Pulse (GameMaker Signals)
A powerful signals and events framework for GameMaker that helps keep your game in sync.
Camalecor
color pallete generator
AutoTiler for GMS2
Tile generator for autotiling in Game Maker Studio 2 Projects.
Top Down Framework (Game Maker Studio 2.3)
A framework for the rapid development of top down shooters in Game Maker Studio.
DnD to GML converter
Convert DnD blocks in GMS1 projects to equivalent GML
Outline System for Gamemaker 2.3+
Outline system for GMS2
mMcFabs's Texture to SkyBox Converter
Convert flat horizontal tiling textures to convincing skyboxes with relative ease!
Online Fighting Engine - GameMaker Source Code
Source code gameMaker Online PvP Engine
GameMaker Camera System
An advanced Camera System for GameMaker (with platformer player controller)
Sprite Anchor Animator
Create anchor points, manage hitboxes, and more! For Game Maker projects
Simulation Starter Kit (Engine, Editor and SDK)
A plugin-based 3D engine, editor and SDK (C++ / CMake / OpenGL / GLSL / SDL2 / Lua)
Micro16
Micro16 Virtual Computer
PushEd - 2D/3D Level Editor (for GameMaker: Studio)
Level Editor for GameMaker: Studio
MMO Engine 2 - GameMaker Source Code
Source code learn to create online multiplayer games with this engine
MMO Engine - GameMaker Source Code
GameMaker Online Engine
Online Voice Chat - GameMaker Source Code
Online Voice Chat
TAB - Thinbasic Adventure Builder
Text Adventure Creator for PC Windows XP and above. Tool/Utility for making Interactive Fiction (32/64bit)
GM PyxelTiler
Game Maker: Studio <-> Pyxel Edit Converter (TileSet)
GM-Ez-Console
A simple terminal console to debug your GameMaker games.