Snakes and ladders

Snakes and ladders was a board game originating on Earth.

Snakes and ladders was one of the games the Celestial Toymaker played with his victims. In the Toymaker's version, his opponents found themselves on a life-sized version of the game, having to climb actual ladders and evade giant snakes. (PDA: Divided Loyalties)

Behind the scenes

 * Doctor Who The Official Annual 2007 featured a playable variant of snakes and ladders made with references to Tooth and Claw called "Werewolf Attack!"
 * DWA 177 contained a playable snakes and ladders variant called "Don’t Go Up the Stairs."