Dragonvale is a iOS game that allows you to breed dragons. The eggs and breeding all take different amounts of time. Thus the problem is you can have two breeders and four eggs on the nests so maximum thru-put to get the dragons you want can be, well, time consuming. I considered setting multiple alarm times on a mobile device but that gets to be a pain so the Arduino was pressed into service.
Essentially six different timers with LED's for alarms.