Great game! I've already played it twice, and looking forward to another round. Unfortunately it crashes at the end... I tried on an original C64 plus on the C64 Ultimate, and same issue, crashed at end.
By the way, the dual SID sound of Missile Defense was amazing, please add dual SID's for future games (I know you mentioned in a post that it was not mentioned, but indeed a lot of us noticed the dual SID and appreciate it!!) I do have 2 physical SID's, but I do not think my mod is causing the crash, I've not had issues in the past, but mention it just in case...