It seems you've only recently become acquainted with board games and collectible card games. Regarding Munchkin, the game has a deliberately parodic slant; it's a parody of role-playing games, primarily D&D. I could tell you about most of the cards and why they're named the way they are, but I'm afraid it would take too much time. So, I understand you were taking images for the board game from some parts of the Heroes series? It would be interesting to see the mechanics.