Well then it is only fair to mention that ZX81CODER here is the one and only DR BEEP.
You can check it on the games I mentioned.
If you have a question just ask.
Best place is on SINCLAIRZXWORLD since I am there more often than here.
To make a game fit 1K you could always skip the intro and mention how to play the game in a manual
(or in a tape inlay as it was done back then)
Johan "Dr Beep" Koelman