I was very impressed that someone had thought of this when this map pack was first mentioned. Finally having suitable maps to do one of those creepy "inside massive villan's body" levels that crop up in so many videogames seemed like a great idea. On getting them I was a little disapointed at the final result's lack of internal detail on some of the creatures.
That said, the sheer intimidation value these maps carry when my player's know I've got them along with me is easily worth the cash I spent on them.

I love minis and mini-scale maps. And, having ran a few games where something has "disappeared" into a larger monster, I found this run really interesting and fun. Could the maps be more graphic? Sure. But they really didn't need to be. I find it's easier to use just plain grids rather than go "all out" and make a potential confusing map pack.

I have to echo the previous review. I too received this as part of a subscription and was thoroughly disappointed. So much wasted potential. My head danced with visions of intestinal hallways, stomach rooms, pools of gastric acid, grinding gizzard traps and digestinal valve doorways. All surrounded by anatomically colored mystery organs. What we get are mostly monster outlines with a few 1" squares gridded in them. Sigh. As discussed by the first reviewer, there a few interesting tiles, but most are a bust.

I received these as part of my map pack subscription, which largely has blown me away in innovativeness and beautiful detail. This pack is instead bland and repetitive. Given time, I could make better on my own.

The only good feature of this set is the "inside of the whale" set of four cards. This is what the whole pack should have been like: the mouth and gullet of the creature, with some unique, clear details (and the watery bits can also be re-used for other water scenes). These cards are the reason for the 2 star rating, rather than a 1 star.

The gelatinous cube is also neat because we have both the cube and the corridor it's in. Or it would be, if the rest of the corridor were gridded so you could actually use it as a combat map. I’ve yet to see a fight take place entirely inside a gelatinous cube, so the only way this card will be useful is if you cut the cube out.

As for the other 13 cards? The sample pics now up are exactly what you get--a bland silhouette of a monster in generic terrain, with some blank red squares inside. Again, there are no gridlines outside the monster, so you can't use the whole card as a battlefield (so say, if one PC is in the monster and another PC is outside the monster, you have no way of easily judging distance). If there were gridlines, you could use the card atop a regular battle map and move it if the monster moves; again, most of these are monsters where the fight would not take place entirely inside the monster. I cannot see a way you can get your money’s worth for these cards’ limited use.

The real shame about this set is that it had the potential to be an awesome set of “living” landscapes to be used as both innards and alien terrain, and this potential was discarded in favor of an unusual shoddiness, laziness, and poor forethought otherwise unseen in the Game Mastery line.

I’m tempted to dump the majority of the set straight into the recycling bin. Maybe I can get some use out of them as index cards at least.