Multiple unreleased 2nd generation Pokemon have been discovered, including never-used baby forms and evolutions, different starter Pokemon, and other entirely abandoned concepts.

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L-R: Flambear -> Volbear -> Dynobear, Cruz -> Aqua -> Aquaria

A recently uploaded ROM of the 1997 Nintendo Spaceworld demo for Pokemon Gold The Cutting Room Floor . The demo pre-dates the final version of the game by two years - and a lot seems to have changed in that time.Most notable are the Pokemon themselves. For instance, the Cyndaquil and Totodile starters and their evolutions didn't exist at this point - instead, they were Flambear and Cruz:On the more familiar side, there are baby versions of Vulpix, Tangela, Goldeen, Paras, Doduo, Meowth, Ponyta, Grimer, Growlithe and Mr. Mime:There are also evolved versions of Pokemon such as Tangela that wouldn't appear until later generations, entirely unused evolutions (a screaming, horned Ditto is a highlight), and Pokemon that would simply never be used, like Kurstraw, a Pokemon that's just a creepy Voodoo doll Another, strangely tragic oddity: the shell Slowking wears as a hat used to be its own monster entirely, Turbann As compiled by ResetEra user The Shadow Knight, here's every single Pokemon sprite found in the demo (and you can find a full rundown of all Pokemon in the demo, and much more, in this community spreadsheet ):The teardown has revealed a lot else of interest. There was a very different roster of Trainers to battle, for instance. The map for the game is also very different - mainly in that it is much, much bigger, and seems to mirror the structure of Japan. Strangely, Gen 1 region Kanto is a part of the map, but looks to have been shrunken into the size of a single town.This build of the game has been the subject of much discussion over the years, with The Pokemon Company famously secretive about its unused plans for the series. It's still not clear who uploaded the ROM of the demo.It's been a busy few days for Pokemon of the future as well as the past - Pokemon Let's Go Pikachu and Eevee have been announced for release this year , with a brand new core RPG to come next year

Joe Skrebels is IGN's UK News Editor, and he desperately wants a baby Grimer. Follow him on Twitter