I was wondering if anyone else played this, even though it's more of a 40K game. I just came across it now, and am definitely going to try and get some of my friends to start up a couple games. I think a lot of the Lizarmdmen models have some amazing potential to be converted into models for this game. Here's the link for the rules, if you were interested. And hereis the page for it on the Aussie GW site.
A loooooong time ago, when they first came up with Catachan exploding frogs, my friend and I thought it would be a fun idea to play a battle with a bunch of deadly frogs all over the battlefield. We made it a 3k battle to try to reduce the effect of the frogs, but we made them cause so much damage that the damn things just ruled the battle. It was hilarious. We have come up with our own various ideas and themes for battles with wild creatures. Once, in an Apocalypse battle, we had wild tyranids around that could be controlled by getting hold of a synapse node objective in the middle of the field. And in WHFB we have had a couple of wild giants around a few times, once there was a crazy 6 giants wandering around the battlefield.