Bomber Man '93 [Special Version] © 1992 Hudson Soft.
Bomberman'93 Special Version is a A non-commercial and very limited edition of Bomberman'93 and comes as a single HuCard. The game only features the multi-player mode (no com players though) and eight different maze themes to choose from. It is difficult to know for sure how this promotional game was officially distributed. Some sources indicate that it was released through the Hudson Soft Fan Club to commemorate the release of Bomberman'93 for the PC Engine. This card is, of course, really sought-after by collectors and rumored to have been produced in no more than a couple of thousand units.
Game's screenshots.
Game's ROM.
Game's description by Laurent Kermel; http://www.videogameden.com