User blog comment:Mathias Custos/Fandom unite/@comment-25555436-20150729010014

......Just wondering, why the hell are you asking us, the random people of a random wikia, and not, say, the people at some website that deals on the actual subject? What makes you think we would know anything useful?

As for the idea itself, I'll be honest: It's childish, and you wrote X-Ray and Vav's names wrong, but could actually be fun, in more ways than one.

Here's a tip, because I'll assume that when you say you don't know how, you mean you literally know nothing about how to do it: Write down the elements, the mechanics, the gameplay, the characters, their playstyles, the differences, how to balance things, the story if it has one, the arenas, the multiplayer modes, and probably any other less-generic element such as Tag Team fights or Limit Breaks.

Once you have all that written down and decided, start working on it. Don't make games by the seat of your pants, that hardly turns out well.