Collaborations in Games

[Moonface]

I just saw the above trailer in my YouTube feed, and my immediate thought was that it certainly wasn't a collaboration I expected to see for Resident Evil. However, I don't know if it's the weirdest one I've ever seen as there are others that come to my mind, such as Uncharted 3 x Subway which had Nathan Drake holding a fountain drink cup in actual game footage such as the iconic plane sequence and an escape from a sinking cruise ship..


So what are the best, worst, strangest, or just simply unexpected collaborations you've seen games doing?

[shadow]

Animal Crossing New Leaf and adding in characters from twilight princess with wolf link, the splatoon series with the squirrel sisters & so forth. The hello kitty cards are also interesting but wish we could have gotten hello kitty as a cat in the game as a villager.