Oh sorry. I completely forgot about this. Just couldn't remember. Sorry.

That's asking? Well I thought a question should have a questionmark or something. But however. It's ok.

It's not realy a game. It's just a demo you can use in your scenarios. Using this scrolling world you can make your world seem much bigger.

To exit the fullscreen you can use the key combination 'Alt' + 'Tab'. But the game only works when you play in the fullscreen window. Otherwhise the buttons and keys will not work.

It's a bit irritating that your mouse always moves out of the applet frame. I think it would be better if your mouse always would stay in the middle of the screen. Maybe this API can help you: http://docs.oracle.com/javase/6/docs/api/java/awt/Robot.html#mouseMove%28int,%20int%29

When you try to connect an objects output with it's own input the simulation stops (doesn't make much sence to connect the objects this way but that causes exceptions).