Rumis is the Incan word for stone. In this game, each player tries to use the most pieces in building a structure. It is similar to our old favorite Pueblo, but simpler. Some folks liken it to 3D Tetris; others, to 3D Blokus.

Each begins with eleven "stones" made up of between 2 and 4 wooden cubes. In turn, they try to place stones on the board, carefully observing three rules: A stone must touch a previously placed stone of one's own color (except for the first round, where a stone must touch a previously placed stone of any color). The height of the structure must not exceed the limit shown on the board. And, hereís what makes planning tricky, overhangs are not allowed.

Any player who cannot place a stone according to these conditions passes for the rest of the game. Once all have passed the final score is calculated by counting the number of cubes of each color visible looking at the top of the building and subtracting the number of stones of that color, which could not be placed. The player with the most points wins the game. The box contains four boards with different levels of difficulty requiring different tactics.