As a long-time gamer, I've played and continue to be involved in games which use hex maps, going back to Squad Leader and other Avalon Hill products. One of the earliest such games I played with the Metagaming/Steve Jackson classic Ogre, for which I've already done a bit of printyness. Having 3d cybertanks ready to roll is great, but what about the other units? The internet being what it is, somebody's already way ahead of me. The units are great, but can I add anything to that? Nifty as they look, they're missing something important for actual game play: stats. But that's easily dealt with. Whip up a hexagon of the appropriate size, extrude it into a suitable thickness, add a little 3d text around the edges, and drop the unit miniature in the middle.
One of the other games I'm into is the likewise Steve Jacksony RPG GURPS, which likewise uses a hex grid to regulate movement. Here, again, the internet's got my back, with these lovely floor tiles which could be used to build nice dungeons. All I have to do is to add some hexes, as in this test piece.
The problem here, though, is one which has plagued gaming map-makers for decades. People tend to build in rectangles, but maps are in hexes. The source tiles I'm working with are naturally in various sizes of squares and rectangles, and while I can lay down a hex grid of whatever kind I want on top of a batch of tiles, I have to decide between making either a geomorphic hex grid which doesn't make sensibly shaped rooms or a geomorphic square grid which ends up with a bunch of not-quite-hex-shapes around edges. Oh, well.