This is Warcraft III Marathon, a innovative and even vicious minigame. You must complete 10 laps to win. Each time you finish the side of the square, you change to a random unit. Can be anything: a sheep, a golem, a ward, a bandit, etc. There are also burrows that allow you to cast a variety of spells: from Destruction, which kills all the units on the map (Thus reseting the unit to the beginning of the section and resetting all the units.) with no mana cost at all, from Silence, which silences all the burrows. However, all of the others requires mana, which you gain only by killing other units.