Crossovers are an important pillar in the world of video games. Having two worlds that have been separate for so long come together in some flashy way is always a delight that gets our lizard brain functions in a tizzy. But, as cool and exciting as they are, crossovers are also somewhat uncommon, especially in big console games. So while limited time events on mobile games bring a lot of IP together all the time, here are some properties we'd love to see together in big, blockbuster releases.