The platform game (or platformer) is a video game genre characterized by requiring the player to jump to and from suspended platforms or over obstacles (jumping puzzles). It must be possible to control these jumps and to fall from platforms or miss jumps. The most common unifying element to these games is a jump button
From: http://en.wikipedia.org/wiki/Platform_game
So, have you played these sorts of games? If so, what do you like/dislike about them?