Well, after many years of playing, it's time to move on. The game use to be fun with ample rewards and challenging (but doable) levels. You could earn enough gold by knuckling down and finish levels. You could earn boosters watching videos (commercials).
Now the game has removed the videos and made the levels impossible to solve without gold.
The only way to get gold is to pay.
Sorry it just isn't worth it.
No more King Games for me.