Are there any house rules for combining Munchkin and Fluxx?
As much as I love Munchkin and Fluxx, the game mechanics are so different that combining them would just cause a headache. How would keepers interact with Kicking down the door? Do goals change the requirement to reach level 10? It would be so confusing and weird to play that I would suggest staying away from combining these card games. However, there were expansions for both games if you want to freshen up gameplay.