Nice game. I saw a small problem, playing in WinAPE, just in game, if I press F1/F2 several times quickly, the game restarts. Is it a bug or a feature?
This is a feature I added so that if you have infinite lives and get stuck, you can perform a "Call 0" by pressing F1+F2 simultaneously to restart the CPR ROM on the GX4000/Pico GX. While the game can be played on a CPC with an M4, it's designed for the GX4000. If this option proves inconvenient, I can disable or modify it in future updates.