Libraries

Fauxton 3D
gizmo199

Powerful and efficient sprite stacking framework
sprites stacking 3d
Actions
nofluxgiven

A library for self-contained, time-aware functions in your Gamemaker instances
time actions
GML Outline Shader
grisgram

Outline shader system
outline shader
Shade
electrodev1

A small wrapper for gamemaker that makes shaders faster to use
shader wrapper lts
GML-OOP
mtax

Library of constructors operating primary GameMaker functionalities.
oop lts
gooey
manta-ray

small, sprite-based UI library for Gamemaker LTS+
ui lts
HTML5 Fullscreen Extension
manta-ray

A simple extension for HTML5 that enables full screen toggling/setting for Gamemaker games.
html5 fullscreen
NeAudioFix
nkrapivin

More control over GameMaker's Audio
audio lts
libntp
nkrapivin

Get (almost precise) NTP time from pure GameMaker.
ntp time lts
FastSM
juliandicken

Lightweight State Machines
state machine lts
JenScripts
cloaked-games

Rapid prototyping procedural generation
procedural generation
http.gml
sidorakh

A simple http wrapper for GameMaker Studio 2
http wrapper
GMParty
fntrck

Stateful, non-parametric, high-performance GPU particle system for Gamemaker
particles particles system gpu-particles
GM Community Toolbox
alphish

A collection of utility functions for GameMaker.
functions toolbox collection
MultiProcessing
c-red

An implemention of multiprocessing with a focus on simplicity
multiple processes multithreading and 1 more!
PathPlus
delfos1

An extension of GameMaker's paths
path vectors
window_shape💰
yellowafterlife

Custom window shapes!
windows shapes lts
Verrific
alphish

The ultimate automated testing framework for GameMaker... in the works.
automation test framework
Faulty-ECS
faultyfunctions

An ECS for GameMaker Studio 2.3.2+
ecs entity-component-system
Flux
foolslynx

Sequence Transition System
sequence transition
Runtile
attic-stuff

runtime autotiling for gamemaker that comes in blob, edge, and corner wang tile flavors
tilemap autotiling lts
Promise.gml
yellowafterlife

An adaptation of JavaScript Promise polyfill for GameMaker Studio 2.3+
promise asynchronous lts
Sequence Duplicate
keeveegames

Use sequences as graphics templates!
sequences deep-copy duplication
GMDiscord
ches

Discord API integration for GameMaker
discord api lts