Registration
From GMWiki, the Gamemaker Wiki.
Game Maker is free to use but the free version has some limitations. These limitations, as well as the logo when starting the game, can be removed by registrating for a small amount of money. The features gained by registrating are following:
No Game Maker logo when running a game.
Rotated, color blended and translucent sprites.
Additional actions for e.g. CD music, rotated text, and colorized shapes.
Special sound effects and positional sound.
A number of advanced drawing functions, e.g. textured polygons.
A particle system to create fireworks, flames, rain, and other effects.
Functions for 3D graphics.
The possibility of making multiplayer games that can be played over a network.
Functions to create and modify resources (sprites, backgrounds, etc.) while the game is running.
A collection of functions to create and use data structures.
Functions for motion planning.
The possibility of extending Game Maker using DLLs.
