I spent my Halloween night playing Cave Story, since the Steam version of the game got a special Halloween update where all of the sprites were given a holiday-themed redesign. It was adorable playing through the game again and seeing all of my favorite characters in their Halloween costumes, and a lot of the enemies were redesigned as well. There were also many references to other video games, which made me really happy. There were Metroid enemies, Behemoths and Cactuars, Sue dressed up as Princess Peach, Curly as Samus, and Balfrog as Wart from Super Mario Bros. 2!
I think it's really cool when games do stuff like this for the holidays! It gives me another reason to revisit some of my favorite games and provides me with a (somewhat) fresh experience. It may have essentially been the same game, but it sure had a much different tone to it, especially when fighting the Core while it's painted up with giant red lip-sticked lips!