North American release. Game developed in Japan. See the original Famicom version for more information: "Happy Birthday Bugs [Model KSC-H8]".
Description from the back cover:
It's Bugs Bunny's 50th birthday and Bugs has been invited to a huge party in his honor. But Elmer Fudd, Yosemite Sam, Wile E. Coyote and Sylvester didn't make the guest list and they're out for not-so-sweet revenge. They have non-stop nasty tricks up their sleeves to spoil Bugs' chances of ever arriving at his own birthday bash. Dodge dangerous contraptions! Smash mysterious monsters! Help Bugs hip-hop to a happy birthday blowout!
GAME ID: NES-H8-USA
Released in September 1990 in the USA.
May 1992 - Joypad N.8 (Page 78-79) : 80/100