That cancelled SNES game is new to me. Pretty wild to think Rosie and Jim could've been jumping around on a console. There's a lot of trivia about 90s shows and their almost-made-it-to-market merch. Would've loved to see that, especially considering the platformers of that era like Super Mario.
This has happened plenty before. Ever heard of Project Titan from Blizzard? That was supposed to be the next big MMO until it was quietly shelved. Sometimes there's a silver lining though – Titan's assets and ideas eventually morphed into Overwatch.