After seeing U.B.'s anno on ldischler's idea, this thought came to me: do the same, but make it a large (say 50M across) parabola shaped bowl, and put an astroturf surface on the inside. Sink the holes and voila - a parabolic putting green for parabolic mini-golf. You could add bumps and lumps and inclines in the surface which would make it doubly difficult. You could also add any of the hills tunnels and fancy elements - but I think better to stick to fairly flat putting, as the parabolic spinning effects will be lost in the mix.-- goff, Aug 27 2004 Parabolic Pool table http://www.halfbake...olic_20Pool_20TableThe original idea [goff, Oct 05 2004, last modified Oct 17 2004] Parabolic chess http://www.chessvar...2.dir/3manchess.jpg4 real, yo check it. [daseva, Oct 05 2004] Parabolic hockey.-- destructionism, Aug 27 2004 Parabolic roller derby.-- Worldgineer, Aug 27 2004 Parabolic TV reception.-- FarmerJohn, Aug 27 2004 Par-enough-- energy guy, Aug 27 2004 [dest] I think it should be Hyperbolic hockey. Sure you'd slide around a bit, but it's worth it for the name.-- Worldgineer, Aug 27 2004 Parabolic Alcoholics: Watching drunks try to walk around on one of these things. Fun for hours.-- destructionism, Aug 27 2004 I like that-- energy guy, Aug 27 2004 Don't push your luck, Goff.-- 5th Earth, Aug 27 2004 ..of everything.-- gnomethang, Aug 27 2004 Parabolic math.-- DesertFox, Aug 28 2004 Parabolic demolition derby. Hell yeah!-- croissantz, Aug 28 2004 Parabolic Chess.-- Detly, Aug 28 2004 This list will probably be more of the exponential nature.-- RayfordSteele, Aug 29 2004 halfbakery