Casino Gambling Terms Glossary
Casino vocabulary decides outcomes more often than luck does. Whether a bonus is realistically clearable comes down to two words in its terms; whether a slot suits your balance comes down to two numbers on its info screen. This glossary defines the terms you will meet at Spacehills and across the industry, grouped in the order you tend to need them.
Slot machine terms
These are the words printed on a paytable and in the game information screen — the panel most players never open.
RTP (Return to Player)
The share of total stakes a game returns across its complete mathematical cycle, which runs to millions of spins. A 96% figure describes the game, not your session — it is an average taken over a span no individual player will ever cover.
Volatility (Variance)
How unevenly a game delivers its RTP. Low volatility returns small amounts frequently; high volatility withholds for long stretches and then pays large. It is the number that predicts what an evening will feel like, and it decides how big a balance you need to reach the long run at all.
Reels
The vertical strips that spin and settle to display symbols. Five is standard online, though three, six and seven all exist. Together with the symbols on each strip, the reel count fixes how many distinct outcomes a game has.
Payline
A fixed route across the reels along which matching symbols must land to pay. Stakes on a payline game are usually set per line, so the number on screen is your line bet rather than your spin cost.
Ways to Win
An alternative to paylines where matching symbols pay for appearing on adjacent reels in any position, counted from the leftmost reel. Mechanics that vary the symbol count per reel each spin, such as Megaways, push the total into six figures.
Scatter
A symbol that pays or triggers a feature wherever it lands, with no requirement to sit on a line. Three or more scatters is the usual trigger for a free spins round.
Wild
A substitute symbol that completes combinations in place of ordinary symbols, though almost never in place of scatters. Variants expand to fill a reel, stick in position across spins, or carry a multiplier.
Free Spins Round
A feature mode entered from the base game, usually granting a set number of spins with a modification applied — extra wilds, rising multipliers, expanded reels. A large share of a slot's total return is concentrated here, which is why the base game between rounds feels sparse.
Multiplier
A value that scales a win. Multipliers may apply to a single symbol, to a whole spin, or accumulate across a feature. Reading whether a multiplier resets between spins is what separates a modest feature from a significant one.
Bonus Buy
Paying a fixed multiple of your stake — often between 50× and 100× — to enter the feature round immediately instead of waiting for it. It compresses the session rather than improving the return, and several jurisdictions prohibit it outright.
Max Win
The ceiling on what one game round can return, quoted as a multiple of stake. Once a round reaches it, accumulation stops regardless of what the feature does next. A higher ceiling signals a rarer top outcome, not a nearer one.
Hit Frequency
The proportion of spins that return anything at all, including spins returning less than the stake. It answers a different question from RTP and a different one again from volatility, and the three are routinely confused.
Bonus and promotion terms
Every term below appears in bonus terms and conditions. Three of them decide whether an offer is worth taking at all.
Welcome Bonus
The offer attached to a new account, typically a percentage match on the first deposit and often bundled with spins. Claimable once per person, household and payment method.
No-Deposit Bonus
Credit or spins granted without funding an account. Where such an offer exists it is small and tightly conditioned. Spacehills runs no standing no-deposit bonus, though it states that no-deposit free spins appear occasionally with special promotions and birthdays.
Wagering Requirement
The turnover that must be staked before bonus funds convert into withdrawable money, written as a multiplier. The multiplier alone is not enough to judge an offer: check whether it applies to the bonus by itself or to bonus and deposit combined, because the second doubles the work behind an identical headline number.
Game Weighting
The proportion of each stake that counts toward wagering, set per game category. Slots commonly count in full while table games count a fraction, so where you play changes how fast a requirement clears. Harsh weighting can outweigh a friendly multiplier.
Excluded Game or Provider
A title or an entire studio whose stakes count nothing towards a wagering requirement. The list is usually long and rarely read: this operator excludes eighteen providers and more than five hundred individual games, including its own branded titles.
Max Bet Rule
A cash ceiling per spin or hand that applies for as long as bonus funds are in play. Breaching it can forfeit the bonus and everything won with it, and because the limit is easy to exceed without noticing, it is the most common way a bonus is lost.
Maximum Cashout
A cap on how much of a bonus win can actually be withdrawn. Anything above the cap is stripped when the bonus converts, regardless of what the balance showed beforehand.
Bonus Conversion Cap
A ceiling on how much bonus money can turn into withdrawable cash, stated either as a multiple of the bonus or as an absolute figure. Here both apply: ten times the bonus, and never more than €2,000 — which means the cap, not the advertised amount, sets the real ceiling on any bonus above €200.
Sticky Bonus
A bonus that funds play but never leaves the account: at withdrawal the bonus amount is deducted and only the winnings are paid. A non-sticky bonus becomes real money once wagering is complete.
Reload Bonus
A match on a deposit other than the first. Reloads run at a lower percentage than the welcome offer and are often tied to a particular day or campaign window.
Cashback
A proportion of net losses over a defined period returned to the player. Its real value depends on whether it arrives as cash or as bonus funds, and on whether the calculation runs on losses or on turnover.
Net Loss
Deposits minus withdrawals over a period — the figure cashback is calculated on, rather than turnover or deposits. A week that ends level produces no cashback, because there is nothing to return.
Bonus Code
A string entered in the cashier to attach a specific offer to a deposit. Not every casino uses them — where offers apply automatically, a code field in the payment form is simply part of the template, and leaving it empty costs nothing.
Table games, live dealer and fairness
Table games run on fixed mathematics rather than a paytable, which changes what a player can and cannot influence.
House Edge
The operator's built-in mathematical advantage, stated as the percentage of each stake it expects to retain over time. It is RTP viewed from the other side: a 2% edge and a 98% RTP describe the same game.
RNG (Random Number Generator)
The algorithm producing each result independently of every result before it. Independence is the property that makes streaks uninformative: a run of losses changes nothing about the next outcome, and believing otherwise is the gambler's fallacy.
Provably Fair
A cryptographic scheme where the casino publishes the hash of its seed before a round and reveals the seed afterwards, so the outcome can be verified as fixed in advance. It applies to dice, crash and similar in-house games — not to slots or live tables, which use certified RNGs or physical equipment instead.
Live Dealer
A physical table filmed in a studio and streamed to the player, with bets placed through an overlay. Results come from real cards or a real wheel rather than from software.
Basic Strategy
The optimal decision for every blackjack hand against every dealer upcard, computed from the rules in force at that specific table. It reduces the house edge to its minimum for those rules; it does not remove it, and a chart built for different rules gives different answers.
Side Bet
An optional wager placed alongside the main one. Side bets advertise long odds and carry a considerably higher house edge than the game they accompany, which is how they pay for those odds.
Deposits, withdrawals and bankroll
What happens to your money between the cashier and your bank account.
Deposit
Funding an account for play. Methods differ in speed, in minimum amount and in bonus eligibility — some promotions exclude particular methods entirely, which is worth checking before paying rather than after.
KYC (Know Your Customer)
The identity verification a licensed operator must complete before releasing funds, normally an identity document, a proof of address and a check on the payment method. Completing it at registration rather than at withdrawal moves the delay to a moment when it costs nothing.
Pending Period
The interval between requesting a withdrawal and the operator releasing it, during which the request can still be cancelled. It exists for fraud checks and sits before, not instead of, your bank's own processing time.
Reverse Withdrawal
Cancelling a pending withdrawal so the money returns to the playable balance. It is the most efficient known method of losing winnings that were already secured, and many operators allow it to be switched off permanently.
Bankroll
Money set aside for play and kept apart from money with another purpose. The separation converts an open-ended activity into one of defined size, which is what makes a normal losing run survivable.
Chasing Losses
Continuing to play, usually at higher stakes, specifically to recover money already lost. It is driven by the sunk cost effect rather than by any change in the odds, and it is the single most reliable early indicator of gambling harm.
Licensing and safer play
Who supervises an operator, and which controls belong to you rather than to them.
Gaming Licence
Authorisation from a gambling regulator to offer games in a defined market, carrying obligations on segregating player funds, testing game software, advertising conduct and complaint handling. It also determines which authority can act on a dispute.
Self-Exclusion
A binding instruction to close access to an account for a chosen period or permanently. A licensed operator must honour it and must not market during it; national schemes extend the block across every operator in that market.
Cooling-Off Period
A short, self-imposed block on an account that lifts automatically. Unlike closing an account — which at this operator voids all accrued bonuses, points and cashback permanently — a cooling-off period leaves the balance of rewards intact.
Deposit Limit
A player-set ceiling on deposits per day, week or month. Reductions normally apply at once while increases carry a mandatory waiting period, which is what makes the tool work.
Independent Testing
Assessment of a game's randomness and published return by an accredited external laboratory. Certification confirms the game behaves as its paytable states; it says nothing about any individual player's chances.
Restricted Territory
A country an operator refuses to serve, listed in its terms rather than decided by the player. Access from one is normally blocked, and deposits made from one are commonly declared forfeit — at Spacehills the list includes the Netherlands, the United Kingdom and the United States.
Loyalty and VIP terms
Rewards that build up from continued play rather than from a single promotion.
Loyalty Points
Points credited automatically against real-money wagers and exchangeable for bonus funds, spins or other rewards. They track turnover rather than results, so they accumulate through winning and losing alike.
Store Points
A second currency earned by levelling up and completing missions, spent in the operator’s shop on bonuses and free spins. Because the reward is paid in bonus funds, it carries the same wagering conditions as any other bonus.
VIP Tier
A level within a loyalty programme unlocking progressively better terms — faster withdrawals, higher limits, a named account contact. Spacehills names eleven, spread across fifty levels from Rookie to Space Legend, with published cashback rates rising from 1% to 20%.
Comp Points
The convertible form of loyalty points, exchanged at a stated rate for bonus credit. The exchange rate rather than the points total is what determines what the programme is actually worth.
Three entries above carry more weight than the rest. RTP and volatility together describe how a slot behaves, and game weighting decides whether a bonus can realistically be cleared. Reading those three before accepting an offer is worth more than reading everything else after.
The current offers and their published amounts are on the bonuses page, practical guidance on stakes and game choice on the tips page, and what a licence obliges an operator to do on the licensing page.