When you land at least 3 Scatters, the real action starts. You trigger the Fortune Cats Golden Stacks Bonus Round, where you get 10 free spins. However, depending on whether you’ve triggered the Bonus Round with 3, 4, or 5 Scatters, you will get to play the Free Spins on 1, 2, or 3 active game grids, respectively!
However, even if you start the Bonus Round with only 1 game gird active when you land 3 new Scatters, you unlock the 2nd, and when you land 5 new Scatters, you unlock the 3rd grid. The thing is, with each Scatter you land, you get an extra free spin, too, so each time you unlock a new game grid, you’re also getting 2+ extra Free Spins! Once you unlock a new game grid, it remains active for the rest of the Free Spins.
Now, during the Free Spins, a Golden Stacks feature may activate as well. This feature does the following: should you manage to cover one reel completely with the Golden Cat symbol in one game grid, it automatically gets cloned, and the Stacked Golden Cat symbol gets added to the corresponding reel on the one or two other active game grids, leading to massive payouts!