Slotreef is a 5 Reel X 20 payline video slot-machine with sounds and an underwater theme. You can play up to 20 lines at a time and up to maximum bet of 400 coins per spin.A wild card on first reel and an "orca" on last will trigger feature.Can be played in full screen mode if desired. Returns on average 90% to player.Doubleup and save Player features are comprised in the registered variant.