Two years ('88 vs '90). The Genesis had 915 official releases, the SNES had 784. The prior generation, as noted, had a much larger discrepancy due to Nintendo's forcing publishers not to port games for two years (which effectively meant they didn't get ported). Genesis actually had a very strong library, both in quality and quantity. And technically we're not even counting the 32X or SegaCD games, some of which are actually good and had graphics that, for the time, were amazing. But buying additional hardware was not something people were willing to do, so those add-ons generated a lot of ill-will towards Sega and severely hurt their bottom line. Especially the 32X, since they rushed it out the door because the Saturn was coming out the year after. It wasn't the games that lost the 16-bit generation (which, and I feel I cannot say this enough, they werewinningwith more than half the market share in the console market in '92), it was poor business decisions that pissed off Sega's customers. They never learned, either, they actually asked retailers to take a loss on each Dreamcast sold. They were selling the console below cost and wanted the retailers to eat some of that loss. Unbelievable.