Individuals who are looking for a dose of entertainment, they can play slot machines for free. There are many dedicated online gaming portals that offer a wide range of free slots to play. Most of these slots are powered by some top-notch online gaming software developers, including NetEnt, Betsoft, Amaya and Igrosoft and much more. The traditional online casino slots mostly come in 3 reels, whereas the modern ones are available in more than 4 reels. The more the number of reels, the more is the number of paylines and winning opportunities.