Comprehending the Game Interface. A series of reels with a variety of symbols, each signifying a different value or bonus, usually make up the interface. Playfree app gameers start by modifying the size of their wager, which is typically accomplished by clicking the "+" or "-" buttons adjacent to the bet amount that is shown on the screen. Players can customize their gaming experience to fit their spending limit & risk tolerance thanks to this flexibility. Taking part in the game.