The lion kingdom actually remembered typing this one in, 40 years ago.  It was a real tour de force of basic programming.  It would be a good one to convert to C on the C64, but not assembly.  It would be even better in javascript for a web browser.  It had kind of an enjoyable game play.

The other big one lions typed in was laser chess. 

There's a case for porting the slowest games from BASIC to javascript.  Not so much assembly games which were already fast enough, unless it also included an improvement in graphics.