Language Learning & Technology has an article discussing how the popular computer game The Sims can be adapted for language learning. Here's an extract from the abstract of the article:
"This commentary examines how content originally designed for entertainment purposes can be modified to provide natural and context rich language learning environments, without sacrificing its entertainment value. First, I examine a modification to the number one selling video game The Simsthat intelligently combines game data from the English edition with data from editions of other languages to form a bilingual gaming environment. This exposes learners to abundant L2 vocabulary, yet still provides enough L1 support not to detract from the game"
I've just had an idea to extend it - students could also set up a blog and post to it as if they were a member of their Sims family.