Electric Field Hockey

Example game.

This is a good example of games vs. simulations.

One isn't necessarily or inherently better than the other.

See this paper that compared game vs. non-game versions of electric field hockey:

https://docs.google.com/viewer?url=http%3A%2F%2Fpact.cs.cmu.edu%2Fkoedinger%2Fpubs%2FMiller%2C%2520Lehman%2520%26%2520Koedinger%252099.pdf