phosfate

Bejeweled, which may be spelled with more Ls than that, has several samplers of other games. Tonight I tried one called Insaniquarium (don't oversell it or anything, Marketing Department). You get an aquarium, with a couple of goldfish. You feed the fish. The fish crap coins. You catch the coins to buy more fish food and more fish.

Then a chibi Alien teleports in and tries to kill everything, and you have to blast it to bits. You may also accidentally kill one of the fish with friendly fire.

If you don't feed the goldfish in a timely manner, they turn green, die, and sink to the bottom of the tank. Naturally, they also stop crapping money. However, if the fish live long enough, they turn blue, wear little crowns, and start crapping diamonds.

So, really, the kind of realism you normally only get in, say, a high-end WWII combat sim.