At this rate, there will be more pop culture-branded versions of Munchkin than of Monopoly.
In February 2018, Steve Jackson Games is releasing a collectible card game based on its popular Munchkin non-collectible game card game.
Not sure how well the humorous Munchkin vibe will translate to CCG fans. Obviously the game has sold a ton of cards in its various base sets and expansions, but I’m not sure Munchkin is the sort of game that people want to play in a CCG format.
GURPS Fourth Edition was released back in September 2004. I used to have a bookshelf lined with GURPS books. Now I have an iPad filled with GURPS PDFS.