This document describes the various menus and tools available in the GameMaker software for creating sprites, objects, rooms, backgrounds, particle systems, enemies, and more for building a 2D game. It provides screenshots and explanations of the sprite editor, object creator, room designer, background tools, code editor, and other features used to develop a game where the player navigates various levels shooting enemies. Adjustments made include adding more realistic backgrounds, different types of levels, a final boss, death and win screens, a start screen, tutorial, and background music.