I played this project and did a video and thought it was fantastic. It was a very well polished game and I too had a problem with the cursor staying focused on the game but I've had this before and I think it could be kinda related to my panasonic vierra 5000. The last game that had this problem I had to unplug to the TV and the game worked fine but I haven't test it yet tough.
Even the end scene with the ship in space was awesome.
Here's my video.
Regards
wobblyfootgamer