... NEC Avenue's PC Engine port of Fantasy Zone.
This version of Sega's surreal, pastel-filled shmup was released in 1988, by the way. It isn't an arcade-perfect port, but it's close enough that only the most anal Fantasy Zone fans would turn up their noses at it.
You may remember me saying recently (in this 'Second Chances' post) that I haven't always been a fan of this game. Well, my opinion of it has changed enough over the last few months that the complete-in-box copy of it seen above was one of the first things I purchased after my birthday.
Now if I could just get past the third or fourth stage.
Anyway, for anyone interested: Another photo or two of my copy of Fantasy Zone can be seen in my Flickr photostream. (Also, click on the ones above to take a closer look at them.)
See also: Previous '12 Games of Christmas' posts