Quest Atlantis: "This is a multi-player simulation, in the same category as River City, on a game-style foundation. Quest Atlantis is, of course, very different from the much smaller-scale and more targeted simulations/interactive demonstrations available from the Wolfram, PhET and SSED projects. Quest Atlantis is targeted for children of ages 9-14."
Wolfram demonstrations project: "This project is intended to engage children ages 9-14 in a form of dramatic play comprising both online and off-line learning activities, with a storyline inspiring disposition towards social action.