This is one of two chiptunes I wrote for a flash game (not here on NG). I spent about 3hrs each on both of them, but they were fun and turned out well. These are not TRUE chiptunes in that no tracker was used and channel count and memory limits (for any certain soundchip) were ignored. I did this for the chiptune effect only.
Please contact me if you would like to use this in a project. We can discuss the details.