Wiz War
I think I've play this game. You get a dungeon deck right, right then deal them out and that sets up the play area?
Four "boards" which you can arrange any which way, yeah. I built a hex-grid version for myself, implenting a lot of card ideas I had (some of which were inside jokes with my friend at the time, such as Hot Chocolate being a healing item and Mr. Johnson's Revenge was a card that made Hot Chocolate a useless item--Mr. Johnson being the physics teacher I had in highschool who was the one who gave us hot chocolate in class, and if he wasn't feeling nice that day he'd take it away*).
I ended up with a deck of like 200 cards, which I'd printed out on a brown cardstock, which was like 2 and a half inches thick. Later I went through and removed a bunch of that crap and balanced out the ratios (so your "value" cards--some attack cards couldn't be played without them, they also increased movement--were as common as the original game). I also had to ditch a few of the map boards themselves as I'd drawn out the walls poorly and created useless dead-end sections (which was funny when it came up due to Create Wall, but utterly pointless as the base map construct).
*Or more accurately he took away the coffee
pot, prompting creative students to hold the styrofoam cup under the coffee maker's drip-spout for hot water (and burned fingers).