Thunderline Express: Supercharged

An Accumulating Multiplier is a powerful system, primarily used in bonus rounds like free spins. The core of this feature is that the multiplier applied to winnings does not reset with each spin; instead, it is maintained or continuously increases until the bonus round ends. Its goal is to create anticipation for exponentially larger payouts as the round progresses, providing players with maximum tension and thrill.

An Instant Prize Symbol is a special symbol whose role is to pay a set cash value or bet multiplier just by appearing on the reels. The core concept is that it provides a direct reward by its mere presence, without the need to form a winning line like regular symbols. It is often called a 'Coin' or 'Money Symbol' and serves as the most basic 'material' in various bonus features of modern slots.