[SmokeRulz]

Anything mixes well with anything, I'd say! Although Fantasy Munchkin seems like a great mix with Zombies, because the greatness of playing as zombie elves and dwarves and stuff goes without saying. Also I believe there's a couple Undead monsters that can join in the swarm rule fun, and of course being a Zombie Cleric countering other zombies with divine might. Awesome.