Hiya Jack!
Thanks very much for trying out my game and taking the time to comment, I really appreciate you saying that it's a fantastic effort as I did put a lot into this.
Sorry to hear about your computer not being able to run it well, I have only tested the game on a couple of computers and I'm not sure why exactly that would be. I hope others won't encounter the same problem! I will also take on board your constructive criticism also.
Thanks again :)
Nicola