Our library of free online slots covers all of the biggest software providers and the best new slot games in the industry. Below, we've narrowed down five of our favorite slots to play in demo mode for June. The Buffalo King slot machine was developed by Pragmatic Play, whose great games can often be found in the lists of the best online casinos. They know how to create games that is fun and interesting for gamers. The Buffalo King is probably the proof of that. The Buffalo King slot game by Pragmatic Play features a North American wildlife theme, with symbols on the reels including various animals such as the buffalo, eagle, coyote, cougar, and moose. The games graphics are of high quality, with clear and detailed images that bring the theme to life. The colors are bold and vibrant, and the animations are smooth and seamless.