I love it when games wear their math on their sleeves. I also like when games are based on real-life systems, even when those systems are twisted or simplified for the purposes of smoother design. Pandemic is a good example of the former: the way the Infection deck is constructed and manipulated makes it clear how the game’s randomness works and why the same cities keep breaking out in more and more disease. Spacechem is a good example of the latter: it takes the concept of chemical bonds and process engineering and turns it into a brain-twisting puzzler.
Pocket Frogs, by Nimblebit, does both of these things. It takes the concept of genetic inheritance and uses it to make a sort of gambling game where the math is always visible and calculable.
It’s a game where you breed frogs, trying to produce certain special collections. But let’s pretend it’s not.