Kingdom Hearts

The Kingdom Hearts series defines the word crossover, but when you think about it, a mash-up of Final Fantasy and Disney characters isn't really as insane as it seems. Both universes are fraught with sappy love stories, melodramatic characters, inept evil forces, and (most importantly) bucketloads of nostalgia.

Good on Square Enix and Disney for exploiting that without really exploiting it, because the original Kingdom Hearts and its direct sequel are some of the most lovingly crafted games of the last generation. The same can't be said for its seeming endless parade of subpar portable spin-offs, and we're so tired of waiting for Kingdom Hearts 3 that we literally don't give a shit anymore, but the series will still always have a place in our hearts.