Spaceworld '95

Spaceworld `95 was a Japanese gaming event formerly called Shoshinkai which was the first reveal of the Nintendo 64 (formerly called Ultra 64 at the time), with thirteen games. This included two playable game prototypes which were Super Mario 64 and Kirby Bowl 64. The development of Super Mario 64 was reportedly the most advanced, though only 50% complete. Twelve playable demos had been prepared for the show, but Hiroshi Yamauchi pulled ten of them from the itinerary just days beforehand. Nintendo made the first announcement of the Nintendo 64DD with a release date of 1996 without any technical specs