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Tab Effect
Tab Effect is a Firefox extension that adds some nice effects when the current tab is changed....
The Butterfly Effect
A physics game about cause and effect...
Gravity Simulation
This tiny software provides a demo that uses physics to determine the motions of objects...
Gravity Game
In this game, your goal is to get your spacecraft from the blue planet to the green planet...
Tower Simulation
This platform-independent application allows you to play around with the effects of gravity...