What could be more fun that watching two pyjama-clad men pound each others' bones to dust? Watching three pyjama-clad men beat each other up of course!
Archer Maclean's superlative martial arts game is still highly regarded as one of the best of the Karate/Kung-Fu/Judo/Ninjitsu... erm, beat-'em-ups - the main reason for this being its three-player option. Even though one of the participants is always computer-controlled, it's still great fun for the other two to gang up on him if they so choose.
Despite its advancing years, the graphics are still fresh and the music is excellent - especially during the novel pause mode. The range of moves available is only surpassed by Budokan and the bonus levels are imaginative and great fun.
IK+ (as us trendies call it) is an excellent purchase, well worth getting to involve your mates in some seriously violent fun.