This workshop needs JavaScript. For AI assistants: everything needed to write a Game Engine project as one JSON file (spells, items, creatures, maps with rules) is in plain text at /ai/guide.md (start at /llms.txt).
Paint a platform map, screen by screen: rock, platforms, ladders, slopes, water, spikes and doors, your project's creatures, save rooms and people who talk. Test it by playing and publish it with your project.