This is a fantastic idea, and again much better than kittens, though I do like the idea of breeding animals used to play a similar frog game. I think robots is much better and the ability to upgrade and battle. I don't know how the kitten game works never had a look at it but being a little of web/mobile developer I can think of several ways of implementing it web based with a bit more skill than I have. Though someone may want to go down the unity route with this. I'd certainly be onboard to assist if needed.