A little bit of history

I started writing this when I was about 11 back in school, using BBC basic - this was on an RM Nimbus PC-186 with some kind of BBC Micro emulator (that wasn't really an emulator, it didn't run any machine code, just simulated BBC Basic to run educational games).
It progressed for the next couple of years, getting a level editor at some point. It was quite popular in school at the time, probably because it was the only game the network manager would let us play on the network

In 2004, I resurrected the old game disc, and tried to get a working emulator image of it. This involved tracking down the old emulator (as it saved files in its own weird format) and running it using "runpc186" off a boot floppy! Also a lot of pruning and optimising to make it work on a real BBC.
...and here is the result. It's pretty basic, and some of the level designs are just hilariously awful, but it's still moderately playable. It even runs fine on an electron. No way is it good enough for any kind of release, I present it here for your amusement, really. Enjoy.

(Note slightly non-standard BBC keys - Z X ; and . )