These out of space crystal symbol will help you get rich in the Robotnik slot by Yggdrasil. Play this slot machine for free in our cool online casino. You are playing on 5 reels that are invisible because it is an outer space video slot. Play with 40 pay lines that give prices from the left to the right side. With every win you get a free spin and that will continue as long there comes a additional winning symbol to you win on the slot Robotnik.