[0xbadcafebee]

Bouldering has to be the nerdiest sport. You spend most of your time sitting and problem-solving with intermittent short bursts of work, you can do it at any level of fitness, and there's no competition. I'm kind of surprised nobody has combined a math game with it yet, where as you climb you uncover numbers that tell you where the next hold is so you can't pre-plan your route.

[camtarn]

I remembered coming across an interactive bouldering game a while ago, which used a projector to light up holds to create a custom problem each time. I couldn't find it with a quick search, but I did find this list of bouldering wall games:

http://www.canadarockclimbing.com/games.html

which includes 'Pointer', where a partner uses a broomstick to point out the next hold in the sequence just as the climber has reached the previous hold.