To play free slots, just log into your browser and click play for free using any device. Next on the list is Merkur, which has designed more than 200 games over its twenty-year history. Among the Merkur’s games are online slots, roulette, blackjack, and some other games famous for their excellent HD graphics. Many of Merkur’s games are developed using HTML5 technology, making them playable right in your browser no matter what device you use for gambling.