My vivid imagination nagged me to share these 3 ideas in much detail...


#1. Need For Speed vs. Midnight Club

The franchises not only to prove their merit, but to drive the final wrench into each others "networks". I can imagine game-play similar to SPLIT/SECOND elimination races, where players trigger automated maneuvers like "donut", "nos" or "precision gear shift" in 1v1. First to eliminate the opposition wins.

#2. N+ vs. Super Meatboy

A very epic match in which the two attempt to sabotage starve each other; All while surviving a brutal co-op(ish) series of levels. Glory to the last one to reach the checkpoint, though your failure succeed will resurrect the opponent. Immediately.

#3. Condemned Vs. Contagion

The leaders within four faction (Police forces, Survivalist, Zombies and the Deranged) attack in extremely violent manners. This could play out as an generic fighting game, but I would still prefer a third person "fight or flight" model; the element of surprise would be to this game as the gun aesthetics & are to Halo or COD etc.