Thank you for your kind words and review. I'm glad you are looking forward to the full game. Like promised, the game will be a free download on this site. Possibly around about December 2022, if all goes well, possibly sooner.
I hope to add some additional options to the title screen that can ease the game play a bit. Like amount of credits to continue a level, and also auto firing mode on/off. There is no autofire in the preview because I wanted to make it compatible with RGL's theC64. Holding fire on the joystick will trigger the smart bomb (if carried). That will take place after all 16 levels are finished.