1) GT Interactive Software game 2) Roller skating element 3) Windows game 
a two-wheeled sideways slide, usually with one foot on the ground.
[inline skating] The powerslide is a braking method used in inline skating where both skates are quickly moved into a position perpendicular to the moving direction of the skater. Whereas braking this way is quite common in ice skating (where it is called a hockey stop), any irregularity on the surface can make a novice roller skater easily...