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Games like Quality Structures

Livecoding for GameMaker: Studio / GameMaker Studio 2
Error handling for GameMaker games
Package GameMaker rooms and load them as you please
Better and safer JSON functions.
Dynamic scripting on Win/Mac/Linux.
Capture part/whole screen/all screens inside or outside of your GM games
Create one sprite, have unlimited possibilities!
Better INI functions for GameMaker: Studio
Work with files in all accessible places in GameMaker games.
Show progress bar in taskbar in GameMaker games
A high-end code editor for GameMaker: Studio / GameMaker Studio 2
Get information about the player's screen(s)!
Raw Input
$14.95
Use multiple mice and keyboards in GameMaker games!
Window flashing/highlight/notifications for GameMaker
A simple Tactics engine for GM:Studio
A FPS engine with 3D collision checking and seamless room linking!
GIF
Create your own platformer