Master System Demo Super Tennis cart, Bizarre de Gozarre

SEGA MASTER SYSTEM SUPER TENNIS DEMO DISPLAY CARD

Bizarre de Gozarre no Game de Gozarre PC-Engine

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Wasn’t this a promo only game? One of the grails for Super CD-ROM? Ok, it’s not eBay, but as soon as I saw this, I thought I had to post the link.

Other stuff:
Microsoft Xbox Development Kit