Most people interested in free online slots must have heard about Excalibur. It’s a slot inspired by King Arthur’s legendary sword. It’s certainly one of the best and most fun online slots ever made, featuring 20 bet lines and 5 reels and several bonus rounds. The normal collection of symbols can be found on this slot, including wildcard, jackpot and scatter symbols. There are also sound effects that the player can enable or disable. On top of that the game features an autoplay function, which can be enabled in the slot window and allows the player to play automatically.