Thank you for trying out the game! The idea is to build a high tower, but I wish we would've had time to implement to show the height of the tower too. Keeping the 3 colored pieces in was the only idea we came up with in time to not make it endlessly stackable without really caring of what to do.
I would've liked to give it some sort of cost for placing bricks higher up in the tower, and therefor giving the player a reason to build a more stable ground.
Will think about it and see if we can figure out a nice update for it after the voting period.
Thanks for your input!