Jim Bagley has been making computer games for nearly 30 years. and he has worked on many different systems including the Spectrum, Game Boy and iOS. An incredibly talented coder who worked for Ocean, amongst other publishers, Bagley has turned his attention to recreating the laserdisc game Dragons Lair into a working ZX81 title and what he has achieved is truly breathtaking. It is still a work in progress but as you can see in the video below a remarkable one on a system which is very limited.