Topic: Your Ultimate Crossover Game

Hello all! We've seen it done before with Mario and Sonic and hopefully, in Europe and America, we will see it with Professor Layton and Phoenix Wright on the 3DS.

The purpose of this thread is a simple one: which two, three, or four games would make, at the very least, a very interesting crossover (or collaborative) game?

What I'd really be interested in would be a cross between Phoenix Wright and Trauma Center (the Derek Stiles storyline). I have no idea how it would work, but I know it would be interesting to see play out.

My ultimate crossover game already exists: Abobo's Big Adventure.
http://www.abobosbigadventure.com/

Gaga and Gaga.

Animal crossing/COD
GTA/Nintendogs
MGS/Final Fantasy
Pokemon/Battlefeild

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Any sort of mix between Zelda, Fire Emblem, and Kid Icarus would be fun.

Sonic and Kid Icarus
Big the Cat V.S. The Supreme Ruler of the Underworld!
.....
.....
What? Not violent enough?

Mario and Kirby
Pokemon and Digimon
Metroid and Halo
Mario Kart and Smash Bros.
Nintendo and Disney

Smash Bros. (which already exists)
Prof. Layton VS Pheonix Wright (also exists)
Nintendo VS Capcom
Metroid and Halo
Pokemon and Final Fantasy
Paper Mario and Final Fantasy (FF characters look like a paper mario version of their theatrhythm forms)
Zero suit samus in DOA
Nintendo and Sega All Stars Racing
Metroid and Mass Effect
Zelda and Shadow of the colossus
Saints Row and Red Dead redemption
God of War and Pandora's Tower
Final Fantasy and Tales series
No more Heroes and Lollipop Chainsaw
Tomb Raider and Uncharted
Shenmue and GTA
Space Channel 5 and Rhythm Heaven
GTA and Jet Set Radio
Zelda and skyrim
Silent Hill and Resident Evil
Just Dance and Wii Fit
Hotel Dusk and Pheonix Wright
Double Dragon and Scott Pilgrim game
Fire Emblem and Final Fantasy Tactics

Bond vs. Bourne.

Mario and Sonic at the...nevermind

Sonic and Mario at Angel Island. You play through Sonic 3 & Knuckles with the M&S@TOG cast.

Pfft. As if!

You can play Super Mario Bros with Sonic as the character because the other way around would be too boring

Still better than S&M@TOG.

@Knuckles I though big the cat was dead?

I want Kirby and kid icarus. Keep Kirby silent, but keep KI:U's voice actors and it would be interesting to see the interactions.

^THIS

TALES OF SONIC just a dream tho v.v
also super marimon mario pokemon crossover starters blooper goomba spiny

it can bite and tackle and leer and other things i think ima make a hack of this one day

just found out it is already a hack its a firered hack look up mariomon firered hack

Animal Crossing X Professor Layton

Basically a Layton game with AC style gameplay.
NOT London Life- it showed off the potential this could have as a full fledged game, with 3D graphics, furniture, a complete and explorable London, cameos from the series' locations and even some puzzles thrown in... But failed to be it. Make it happen Level-5.
Dammit, now I've made myself want something that will NEVER happen!