There are many different types of scatter slots game, but the basic concept is the same: players bet on the number of scattered symbols that will appear on the reels. The more symbols that appear, the more points players earn.
There are typically three or four levels of payout, with bigger payouts awarded for more scattered symbols.
How many scatter slots levels are there? That depends on the game. Some games have only one level, while others have several.
The most common number of levels is three, but there are also games with five and even seven levels.