Established in 1994, Microgaming is one of the premier online gaming software developers. By using the latest technology, the company has created over 800 free slots along with 1,200 variants. The company’s range of products consists of Poker, Sportsbook, Casino, Bingo and Multi-Player. Located in the Isle of Man, the company powers slot games online, having superb graphics and high quality sound effects. The free Microgaming online slots includes Four by Four, Retro Reels Extreme Heat, Rhyming Reels: Old King Cole, Game of Thrones and much more.