The built-in room editor in GameMaker is functional but leaves a lot to be desired. This project aims to improve the room editing experience.
A series of YouTube videos that teach you how to make a game using GameMaker. Aimed at beginners, no previous coding knowledge necessary!
GameMaker Server is a GameMaker extension which allows you to add online INIs, online achievements, online highscores or online multiplayer to your game, without having to host your own server.
Tempting but I’d probably roll my own back-end.
Useful 2D lighting tutorial.