Nightmod

Nightmod is a tool for making live-moddable games. You can view a game’s code while it’s running and inject changes by simply hitting “Save”. With the powerful Clojure programming language, you’ll see your game come to life as you type. You start off by choosing one of the game templates: Platformer, Orthogonal, Isometric, Arcade, or Barebones. Each will start you off with a simple game that you can begin modifying.