GB Studio
A quick and easy to use drag and drop retro game creator for your favourite handheld video game system
Superpowers
The HTML5 2D+3D game maker. Open source and collaborative.
GMEdit
A high-end code editor for all things GameMaker
sok-stories
a simple game making tool
Whimtale game engine
Make interactive stories and games with this simple tool
AppGameKit Studio
AppGameKit Studio is a fully featured game development tool set.
BROKVN - Visual Novel Engine
Make your own visual novels with this free and easy to use tool
GMS2 Resource Importer
Conveniently transfer resources between GameMaker Studio 2 projects.
Geon FX
Simply stunning Particle Editor for GameMaker Studio 1-2 with a PNG and GIF Export
ct.js Nightly
Gamedev at the bleeding edge. New builds coming every day!
FMODGMS
[RETIRED] GML bindings to the FMOD Studio low-level API for Windows and Linux
Loop Draw
Draw on the canvas while the timeline is playing.
Fixture Editor for GameMaker: Studio
Make concave shapes!
RickyG's UNDERTALE Engine
This is a reupload of the MODDED UNDERTALE ENGINE by novaquantum.
Space Combat Engine
Space Combat Engine for GMS 2
Behemoth Game Engine
A Game Engine that lets anyone become an Artist! Make Faux3D games without any modelling experience!
Shady – Shader Preprocessor for GameMaker
GameMaker shader preprocessor for code reuse! Import and inline directives, generating shader variants.
Löve Copy
Love2d For JavaScript
Palette Wizard
Create custom color palettes with ease
YY-Reunion
Repairs and re-imports missing resources into GMS2.2 projects!
Laconic Dialogue Writer
A tool for writing and encoding dialogue, and managing dialogue assets
HexGen Free - Hex-Based Map&Level Generator
It is a tool that allows you to work on a canvas for your map generation.
kooltool
the kool tool for sketching world's
GML Audio System (Saudio)
The fastest and easiest audio solution for Game Maker: Studio 2 and 2.3+