Play while you work

Packet Garden www.packetgarden.com

Just like PMOG below, Packet Garden keeps track of the websites you visit throughout each day. But instead of awarding you XP and bonuses for your surfing, it enables you to use the information to create a 3D planet. Every bit of data you upload is represented geographically as a valley, and every bit you download is represented by a mountain. Each time you use a new internet protocol - the web, email, instant messaging, peer-to-peer sharing - a new plant grows. The result is an abstract, Darwinia-esque representation of your computer's journey through the internet, and an explorable world you can travel around as a tiny, ball-shaped avatar. Try it.