Guild Wars: The Experiment that worked

[Raditzu]

I'm really tempted to buy guild wars, but as it stands I'd play it maybe once a week, and lordy knows I've got lots of other games to play too...which I'd only play about once a week.

You could buy just the Prophecies campaign. Its what? $30? And its totally worth it, even if you only play it occassionally. It'll last a while, too. Especially if you get into PvP.