Sweet Mastermind

This is a simple no-frills completely keyboard driven mastermind implementation. It has turned out to be much more addicting that I'd expected it to be, so think twice before installing this game. If after opening the app, nothing makes sense, try typing some numbers or hit `?` for help. You can play the game without installing on http://mastermind.sharats.me. Note: Currently, the game isn't saved when you close the window. This will be fixed soon. Also, at the start of a new game, the answer is logged to the console. I currently don't plan to remove this. Suggestions and feedback welcome!

Screenshots from Chrome Web Store