I played Gammarauders for the first time yesterday. It was fun, but it took pretty much all of the entire universe of time to play.
Point being it's gonna be hard for you to get a game together. So what do you do with your copy of Gammarauders the rest of the time? Use it as a hexcrawl kit for your Mutant Future, Teenage Mutant Ninja Turtles, RIFTS, or Gamma World game...
These are basically animal-based Kaiju with weapons mounted on them, used as armored units in the service of various Cryptic Alliances. Let's just get it out of the way that if you don't already have gargantuan crushbeasts bristling with cruel armaments in you game, you need to get on theat
The weapon cards:
Each beast has a number of weapons it can use, each of which is on a card. The weapons have a power number between I think 3 and 10 and some weapons offers immunity to another class of weapon (say: lasers).
So say there's a random encounter in your game: here's a bad guy, and you can pretty much pull a random card from this stack and there you have a weapon doing 1d6+3 through 1d6+10 (or whatever) and you have a possibility the villain has armor (laser-resistant armor, explosive-resistant, whatevs).
The hex tiles:
As you can see in the picture, each hex is divided into a stained-glassish patchwork of areas. These are: water, regular (desert?), mountain, city, and energy-pod zone (high radiation zone).
PCs want to know where they are? Drop the first tile off the stack down, "Here's what you can see...desert here, mountain here..."
All you need then is random encounter tables for each of these environments.
The numbers in the middle of the hex tiles:
Some of the hex tiles have numbers on them: 2-12. In the game you roll 2d6 to place energy pods, in your game you can roll 2d6 for whatever the Hell your players are looking for. When the tile that has that number comes up...bing! There's the mcguffin.
The game comes with over 100 little cardboard chits. These are all the same size, and the faces have: soldiers (in 6 colors), hovertanks (in 6 colors), jets (in 6 colors), fortresses, fortress ruins, regular ruins, symbols of cryptic alliances, and energy pods.
So you put them in a bag, close your eyes, and pull some chits out: that's what's there. You can replace the hovertanks with, say, monsters, and the jets with flying monsters. You can also work the color code into it, but then of course at that level of switch around you're getting into the abstract territory where you might as well write your own tables.
The point is you just pull something out and, hey, that's exactly the thing, no looking stuff up, no mental translation, no nothing.