GameMaker Studio is a cross-platform game engine developed by YoYo Games. It is primarily used to make 2D games via a drag-and-drop visual programming language or a scripting language known as Game Maker Language.
The most complete tool for modding, decompiling and unpacking Undertale (and other GameMaker games!)
Modular game engine built with MonoGame, with GMS2-like workflow and advanced level editor
GameMaker shader preprocessor for code reuse! Import and inline directives, generating shader variants.
HoloCure mod loader written in C#.
FMOD Studio Bindings for GMS2, focused on opening bank files. Can be used in Windows games.
Early Stages of UTMT Script Obfuscation.
Functional Graph Language (FGL) is a domain specific language for intentional definition and generation of graphs.
A utility tool for generating formatted code snippets for the GameMaker Language with ease.
Created by Mark Overmars
Released November 5, 1999