EA Sports

According to ESRB, this game contains: Animated Violence 

I agree with Chi here, in fact there isn't much I can find to disagree with. The legendary boxers are represented here much more faithfully than in the N64 version and the extras on the disc (boxer bios and 'classic fights') are pretty slick and are welcome additions. As Chi mentioned, this version is much more of a simulation and those of you who read my N64 review will know that the lack of this feature was mostly responsible for my low overall rating.

According to ESRB, this game contains: Animated Violence

Knockout Kings 2000 lacked damn near every-thing I saw in those legendary fights with the exception of the fighters themselves. The feel of vicious punches was missing, the characters moved too slowly, and none of the fighters distinguished themselves. Whatever was in the game to add realism was negated by the over-the-top arcade elements. The only true representative from the boxing world was Mills Lane (how sad is that?).

From the early goings, KK2000 has a lot working against it. Primitive looking models, mediocre motion capture, and poor collision detection all seemed to spell doom for KK2000.

Game Description: Go the distance with boxing's biggest names. EA Sports undisputed world champion boxing game makes its debut on the N64. Featuring power up KO punches, hidden moves and arcade action, Knockout Kings 2000 delivers over the top boxing action. From a no holds barred Slugfest match to a championship bout in Career mode, Knockout Kings 2000 puts you in the ring like never before. Slug it out as or against some of the greatest boxers of all time, including current champions Evander Holyfield and Oscar De La Hoya and legendary ring superstars Sugar Ray Leonard and Muhammad Ali. Fight as one of these champions or quickly create your own boxer to take on anyone in any mode. Lace 'em up and get it on.

Game Description: Pulse-pounding excitement in the first great boxing game for PlayStation. And only the experts at EA Sports could bring it to you! Knockout Kings features 38 of history's greatest fighters including Sugar Ray Leonard Evander Holyfield even the Greatest Muhammed Ali! How would Ali fare against Evander? Find out! With refereeing by Mills Lane there'll be no ear-biting either! It's just like a real boxing match—except no pay-per-view charges!