In Ubongo, players compete to solve individual puzzles as quickly as they can to get first crack at the gems on hand for the taking.

Original edition:
The game board consists of six rows, with twelve gems (of various colors) placed in these rows. At the start of play, each player places his pawn in front of one of those rows. Each player also takes twelve polyominoes — that is, pieces consisting of 2-5 squares in some configuration; players use these pieces each round to try to recreate shapes.

At the start of a round, each player receives a puzzle card that depicts a shape created by some number of squares; one side of this card depicts six rows of 3 pieces, the other side depicts six rows of 4 pieces, for a more difficult puzzle. When everyone is ready, someone rolls a die to determine which row of pieces each player can use to recreate the shape on their individual card. The race is timed by a sand timer, and the outcome of this race determines the action on the main playing board.

Whoever first solves…