User blog comment:'Sonic the Hedgehog'/Game idea: Mario and Sonic Adventure: When worlds collide/@comment-252096-20110530040805

Now if only Sega wasn't, for some reason, convinced that an adventure game with these two can't work because they absolutely have to be out of their element to be on equal ground (because, derp, we ALL know that not ONE person in the world can design levels that incorporate both Mario and Sonic motifs together).

I like the idea of a Mario and Sonic adventure a lot, but not quite the direction that you've taken it. What you've got here seems to be a bit of a pipe-dream, and not just because Sega isn't going to let it happen in the first place. I guess what I'm saying is that if it did happen, you're not entirely down-to-earth with your thinking...

I mean, any characters other than Mario and Sonic being playable would not be ideal (not until they made a sequel, at least). This concept is supposed to be Mario and Sonic alone teaming up to stop their nemeses, and the best way to keep that base concept as pure and simple as possible for their adventure debut would be to have them be the only playable characters. It's the same sort of dichotomy that Generations has. Who would want to play as anyone but Sonic in a game created solely to bring his past and present selves together?

Additionally, I'm not sure we need a dimensional crossover to bring the super plumber and the blue blur together. Mario and Sonic already exist in the same world; they have since the early days of their rivalry, and the Olympic Games titles just prove it. Just a thought toward the plot - Eggman and Bowser can team up without a rift in space-time.

So, yeah, just my two cents. I'd like to see a Mario and Sonic crossover, but I'm not sure what you've got here is entirely realistic. I mean, if there's one thing I like to see in game concepts made by fans, it's how plausible they can get - how well can fans emulate the thought processes of the minds of the people who actually make these games?