Each player picks 2 player boards and takes all building blocks in the corresponding colors.
During building block selection phase, the players select 4 building blocks per color they own. The game plays over 4 rounds.
On their turn, a player can use any color of their building blocks.
Game scoring is the same as for 4 players. However, the scores are being tracked separately per color and added up at the end of the game to determine the winner.