ARG (as opposed to Arghhh)
I'm not a big gamer and never have been (brief flirtations with Space Invaders and Pac-Man way back when, Tony Hawks Pro Skater on the PS2, Guitar Hero III on the Xbox 360 and a couple of other things aside). But I do quite like the idea of alternate reality games (ARGs), if only because of the explicit merger of real-world and online activities (note that I said idea - I am very unlikely to ever actually play one of these things!):
An ARG is an interactive narrative in which players work together to solve puzzles and co-ordinate activities in the real world and online, using websites, GPS tracking devices, telephone lines, newspaper adverts and more.
On that basis, the JISC-funded ARGOSI project looks interesting, a collaboration between Manchester Metropolitan University and the University of Bolton that will use an ARG to support the student induction process. [Via play think learn]