Volatility, or the risk linked to a certain slot, or the winnings frequency a player can expect from the video slot at the end of the session.If the combination of these symbols is successful according to the rules of the slot machine you are playing, then the payout line is activated, leading to the winning of a prize. Paylines: virtual sequences that take into consideration the position of symbols when they stop on the reels.The RTP, a value described in statistical terms, over a large number of reel spins, declares its return in cash to the player.