Yes! By the title you can see that I am making a Touhou series that will crossover with some other game! BUT, I don't know WHICH game to cross it with! And I need YOUR suggestions for it! Which game should it cross over with? And I plan to make it like Super Mario Bros Z in a sense. Game series needs to have 2-D sprites of course, and yeah. I was thinking along the lines of MegamanX or Megaman Zero series, but I don't know. Maybe Mario, but its over used a lot. What do you think?

Thanks for the help!

Cooking Mama! Make the sprites!

If you're going for a true crossover, the most likely one for Touhou is Arcana Hearts, if you can find the sprites do that