There are several great features of X-Men free online slot machines no download. The first of X Men free slots is the X-Feature, which is activated if you get any 5 X-Men heroes (these symbols have a blue background, whereas the mutant villains have a red background) in an X formation (one in the center and one on every corner). The X-Feature not only gives you a win, but you get an additional 5x what you originally bet when playing X-Men online free games. There is also the Heroes vs. Villains free spins bonus round. When 3 or more X-Men slots logos appear (the Scatter symbol), the Hero Unlimited Free Game mode begins until you get the Magneto (the head villain of the mutants) symbols, which switches the bonus to the Villain mode. Here, you get 8 free spins, and can switch back to the Heroes mode if you get the Xavier symbol before the 8 free spins are finished when playing X-Men slots. If you want to find slot machines with good bonuses, check out our free casino bonus slots section.