Here is an app I created a while ago and neglected to release. It is the Calculus of Felicity in an app!
The Calculus of Felicity is a philosophical concept thought up by Jeremy Bentham. It is supposed to be able to determine how much happiness an act will bring you. You can then compare that with other acts to see which one would be the best to do. The app allows you to easily fill in all of the variables and calculate the amount of happiness. It will also sort the acts by their amount of happiness to help you determine the best one.
This is not a game, but rather a fun little utility made with Stencyl 3. I guess it can just how another thing Stencyl can be used for.
This has now been accepted on the App Store and it is free!