This is a slot machine game which has a captivating mixture of horror and comedy. This fascinating online slot game has 25 active pay lines, three rows, and five reels. Play Monster casino slot, stake on your desired monster and gain the terrifying prizes. Enjoy from the fantastic, funny graphics and animations of Monster which is backed by the rocking soundtrack. At riversweeps.org you can play the impressive Monster gaming slot and many other fabulous free video slots games. If you want to find and try the latest slots which the site recommends you subscribe to the Youtube channel or follow the site on any social network like Twitter or Facebook. There are a lot of bonus traits in the game which can support you to gain big awards. You can increase your money by using the symbols. The background image of this slot game is like a dark sky with stars and other flying objects. We feel as though the monsters have visited and landed on earth.