Well the game I would play that if it exists would be a crossover between Fairy Tail, One Piece, NARUTO -ナルト- Shippuden, Fullmetal Alchemist Brotherhood and High School DxD.
i would definitely play a Fairy Tail game where its an RPG あなた free roam around fiore and take up quests または start あなた own guild and battle other guilds または somthing
I would play The Future Diary: Video Game Version. あなた would have to take a クイズ at the beginning to see what kind of Future Diary would suit あなた best. Then, it could go one of two ways. 1: An online game where あなた and 12 other people are selected to play the Survival Game and あなた could form alliances and use each other's diaries to your advantage. または 2: あなた replace Yukki as 1st and become the "favorite," having to choose フレンズ carefully and try to win the Game.