3-high is a solitaire or co-operative Icehouse game in which the player(s) attempt to construct five trees of Icehouse pieces on a chessboard.

Pieces are placed randomly on the board at the start of the game. Players are subsequently dealt a hand of playing cards. These cards can be played next to the board to move a selected piece a number of spaces equal to the value of the card minus the value of the piece. The players lose if any of the following three criteria are satisfied: a piece moves off the chessboard, the draw pile of playing cards is exhausted, a player is unable to make a valid move.

3-high was designed by Jason Troutman and placed 3rd in the Icehouse Games Design Competition, Spring 2009.