Power Spins is a name for separate games with features which can be made active on extra bet. It can be played at the Microgaming casinos only.
In Atomic 8's slot the Power Spins activates left-to-right and right-to-left pays. The basic game pays in those winning combinations which create the certain combination of symbols left-to-right only.
Place an extra bet (3x your total bet per payline) to activate additional game features. To do it click on button POWER. All 9 lines will be activated. But you can place coins per line from 1 up to 10.
This feature increases your chances to win.