Game using a 3×3 grid and Icehouse pieces to match stacks of pyramids on one of two goal cards dealt at the beginning of the game. Two ways to win, thus "Twin Win". A simple and quick single Treehouse set game with changing goals Players: 2-3 Other equipment: 1 Treehouse set; some kind of 3×3 board (Volcano board with the outside squares blocked off or a Martian Coaster will do); goal cards (see rules) Setup time: 1 minute Playing time: 3-6 minutes Rules complexity: Low Strategy depth: Low Random chance: Some Mechanics: Each player has two goals, which can change Theme: Abstract; Stacking Also included in Pyramid Arcade.