RTP (Return to Player)
The theoretical percentage of all wagered money that a slot or casino game will pay back to players over an infinitely large number of rounds. An RTP of 96% means the house retains 4% on average — but individual sessions can vary wildly from this figure.
House Edge
The mathematical advantage the casino holds over the player on any given game, expressed as a percentage. A lower house edge means better long-term value for the player — e.g., blackjack (~0.5%) vs. certain slot games (~4–8%).
Wager / Stake
The amount of money placed on a single bet or spin. On wso188, stakes can be as low as Rp 200 for slots and Rp 5.000 for most sports markets.
Odds
A numerical representation of the likelihood of an outcome and the payout it carries. Decimal odds (e.g., 1.85) are standard on wso188: multiply your stake by the odds to calculate your total return including the original stake.
Asian Handicap / Voor Bola
A sports betting market that eliminates the draw by giving the weaker team a virtual head start (e.g., +0.5, +1.5 goals). Known locally as voor bola, it is the dominant football betting format among Indonesian players.
Parlay / Mix Parlay / Accumulator
A single bet combining two or more selections — all must win for the wager to pay out. Mix parlay is the Indonesian term for a multi-leg accumulator and is one of the most popular bet types on wso188's sportsbook.
Live Bet (In-Play)
A wager placed on a sporting event while it is already in progress. Odds shift in real time based on the match situation — goals scored, red cards, injury time — creating dynamic opportunities unavailable in pre-match markets.
Cash Out
A feature allowing you to settle an open bet before the event concludes, locking in a partial profit or limiting a loss. The cash-out value is calculated dynamically based on current in-play odds.
Volatility
In slots, volatility (also called variance) describes how frequently and how large payouts tend to be. Low volatility = frequent small wins; high volatility = rare but potentially large wins. Matches the Indonesian terms Rendah (low), Sedang (medium), Tinggi (high).
Free Spin
A bonus feature in slot games that lets you spin the reels without deducting from your balance. Free spins can be awarded by the game's scatter mechanic or granted as a promotional bonus by wso188.
Wagering Requirement (Rollover)
The number of times a bonus amount must be bet before it can be withdrawn as cash. A Rp 100.000 bonus with a 30× wagering requirement means you must place Rp 3.000.000 in total bets before that bonus converts to withdrawable funds.
Bankroll
The total amount of money a player has set aside exclusively for gambling. Effective bankroll management — keeping bets proportional to your total bankroll — is the cornerstone of sustainable, responsible play.
