Much like the game Azul, players take turns drafting coloured tiles from suppliers to their player board. Player boards consist of reversible window panes (with two separate sides) that must both be completed to get removed from the board. You have a worker at the bottom of one your columns, which moves from left to right based on how you place your tiles. You can only place tiles onto the column where your worker is or one column to the right of your worker. Having said that, the actions you can take each round (much like Azul) include: taking tiles from a factory supply, taking tiles from the centre of the board, OR resetting your worker to the far left column.
Later in the round, players score points based on how they've placed their tiles to decorate the palace. Extra points are scored for specific patterns and completing sets; wasted supplies harm the player's score. Unlike Azul, the point tracker has a fixed number of rounds, rather than an endgame trigger. The player with the most points at the end of the game wins.