They didn't end up using anything from the 3DO M2 version of this in the released version of D2 for the Dreamcast. Very interesting to see some of this finally uncovered. It seems as though despite the advertising campaign "Don't play a dodo", the 3DO M2 was never actually going to be an add on. Perhaps in the planning stages back in 93 til 94 or so. But it's always the standalone units that turn up, never anything that would've connected to the original 3DO. It was probably realized that the 3DO would have actually bottlenecked any add on just like the Genesis bottlenecked the Sega CD capabilities. Certainly one of the most interesting lost consoles there is, since it would've outperformed the N64 and PS1 at the time of release.