Computer simulation (video game) for following directions

[Earthlark]

Hi all,

Does anyone have a recommendation for a computer simulation (game) I can use in the language lab? We'll be studying giving and receiving directions soon, and using a video game such as the SIMs, etc. is an easy way to do this whilst making it more interesting and life-like. I'm looking for something that's web-based or easy to install (and free) on multiple computers.

Thanks,

Earthlark