Released a playable demo, many thanks to IndieDB for hosting it. Download it here: Indiedb.com
OS: Windows XP, Vista, 7, 8
Hard Drive: 512 MB free space
Due to the number of variations in hardware, it is hard say the minimum processor, memory and graphics required. However it should play smoothly on a 3 year old machine, if not older. The best thing to do is try the demo and see. You can lower the video quality in the options to improve performance.