Both incarnations are nothing more than average.
The Sega Genesis version is an isometric platformer that has almost nothing to do with the film. Once again you play as Mike Harrigan, Danny Glover's character in the film, and you run about killing drug dealers and rescuing hostages. It's only 4 levels long and it gets very boring very quickly. Plus, it's quite easy. To charge £39.99 for a game like this back in the day is robbery.
Only serious fans of the film should bother to check out these games. If the Genesis had been an upgraded version of the Commodore 64 approach to the game then it would have been much better. As it is, both games are tepid and inoffensively average.