You are allowed one series crossover between any media in the same basic genre. (ex. Legend of Zelda & Fire Emblem=good; Legend of Zelda & Metroid=bad)This would be for a full length movie or game, and could not just be like Super Smash Bros.
Personally, my inner geek would cross Star Wars and Star Trek. Why not?
Personally, my inner geek would cross Star Wars and Star Trek. Why not?