You have to compete in a big arena for who is best at building stairs against various difficult enemies. In order to win, you have to pick up the stair planks and use them in order to build stairs and reach the next platform. But watch out! Enemies who have more planks collected than you can easily knock you over when you run into them, which will result in you losing all your collected planks. But of course, it works the other way around as well, so try to collect as many planks as possible and knock over your enemies to gain a big advantage. Winning the rounds will not only give you the pleasure of being the best player in the world but also unlocks cool new skins for your character and planks.
Move around by dragging or using the arrow keys. Collect planks by moving over the planks that are colored in your color and build your stair by moving into the empty stairs. You can also knock enemies away by moving into them while having more planks than them, which makes them fall and lose all of their planks, which you then can collect.