Super! We need more Ninja and/or BMX games!
If it's Spectrum BMX games we are talking about, then it was Codemasters that were obsessed:
BMX Freestyle (Codemasters)
BMX Simulator (Codemasters)
BMX Simulator 2 (Codemasters)
Professional BMX Simulator (Codemasters)
vs just one Mastertronic title:
BMX Racers (Mastertronic)
Mastertronic only released one Ninja game, funnily enough called "Ninja", under their Entertainment USA label. Codemasters also had one Ninja game - "Ninja Massacre".
The funny thing is, there is a game that combines both things! "BMX Ninja" by Alternative Software! lol
And yes... I do have way too much free time on my hands. :)
[EDIT - A day later] Cool, my boring post seems to have killed the thread! LOL