I actually just realised that I have the coveted Batman Version, albeit loose and crummy-labelled! It's been kicking around in one of my boxes of spare crud (mainly full of sports games, half-destroyed Sonics etc) for ages - found it when I was having a sort out, and I got round to playing it last weekend. Batman and his bat friends were fun to kill. :)
I still hate that stupid maze level. It made me have to create a sort of crude map and everything.

