Slot_reef is a 5 Reel X 20 paylineslot Slot_reef is a 5 Reel X 20 paylinevideo slot with sounds,underwater theme and Free Feature. You can play up to 20 lines at a time by amaximum bet of 400 coins per Spin.A wild card on first reel and an 'orca' on last will trigger feature . Feature consists of the 'orca' swimming to each symbol on every reel and substituting for all symbols except scatters.Doubleup and save Player options are included in the registered version.There is a facility to adjust the speed of execution and screen resolution ( which will give a full screen if desired).Returns on average 90% to player.