| Arcade game | Generic Term | A group of casino games that offer something novel or unique from the traditional offerings such as physics based games. |
| Base Game | All casino games | The basic function of the slot game in which the player clicks a spin button and the reels spin and stop possibly providing a prize. |
| Bet-size / Coin-size | Generic Term | The size the bets allowed on the game by the casino. |
| Bingo / Keno game | Generic Term | A group of casino games involving number matching or work from bingo-esque mechanics. |
| Black Markets | Generic Term | Jurisdictions where it is expressly forbidden to offer online gambling services and is there is lack of transparency and scrutiny. |
| Bonus Games | All casino games | A type of game that is different from the standard base game that typically offers a specific type of slot feature with larger wins. |
| Cascade | Slot games | A type of slot game in which matching symbols are removed from the game window and symbols above drop down to potentially make more matches. |
| Croupier / Dealer | Generic Term | The theoretical casino player, typically playing against the player in a casino game. |
| Freespins | Slot games | A type of bonus game in which the slot game plays without the need for the player making a further wager. |
| Game Window | Slot games | The display area of the slot reels/rows that is used to overlay win-lines and present the player with wagers. |
| Grey Markets | Generic Term | Jurisdictions where it is not explicitly legal but it is also not explicitly illegal to offer online gambling activities OR where there is gambling regulation but it is not widely recognised as being effective or virtual. |
| House Edge | Generic Term | The theoretical % paid to the casino over a fixed amount of time for hedging the player’s wager. |
| Instant Win game / Scratch ticket | Generic Term | A group of casino games that are based on a scratch card mechanic of scratching panels to reveal matching symbols underneath. |
| Line symbol | Slot games | A type of slot symbol that has a fixed pay-out for matching a number of these on a win line. |
| Lines / Pay-lines / Win-lines | Slot games | The pattern allocated across the game window that represents a win if the symbols match. |
| Meta-game | Generic Term | A game that is applied on top of a casino game that doesn’t offered a wager or effect the bet logic but offers other returns in the way of enjoyment or a sense of achievement much like a casual game. |
| OAK | Slot games | Of A Kind, which is another way to describe symbol matching. |
| Operator / House / Casino | Generic Term | The casino that offers the games to the player and underwrites the wager. |
| PAR Sheet (probability assessment report) | Generic Term | The mathematical model that drives most casino games. |
| Perfect / Optimal Strategy | Generic Term | Casino game that offer an element of player choice typically have an optimum strategy that would provide the highest RTP over time if the player followed it consistently. |
| Persistent state | Generic Term | The ability for a player’s progress to be saved and returned to the player when they return to the game at a later stage. |
| Poker game | Generic Term | A group of casino games that involve poker based games played against the casino only. |
| Progressive feature | Generic Term | A feature in which the player can progress through multiple levels of the game entirely dependent on a previous result. |
| Reactor | Slot games | A type of slot game in which you match a group of symbols not necessarily along a win-line. |
| Reel stops | Slot games | Each point on a reel where a symbol exists is known as a reel stop. |
| Reels | Slot games | A theoretical fixed list of slot game symbols that rotate when a slot machine is spun. |
| Regulated Markets | Generic Term | Jurisdictions where it legal to offer online gambling and there is a country/state government supported regulation, infrastructure and systems to administer and oversee gambling activities. |
| Rows | Slot games | The number of reel stops that are displayed in the game window. |
| RTP / Return to player | Generic Term | The theoretical % paid to the player over a fixed amount of time for wagering on that game. |
| Scatter symbol | Slot games | A type of slot symbol that triggers a specific event or win. |
| Skill game | Generic Term | A group of casino games where the player can increase the odds of winning through their skill on the game. |
| Slot game | Generic Term | A group of casino games where you spin reels to match symbols. |
| Symbols | Slot games | The different images that are mapped to the slot reels that a player has to match to trigger a win or specific event. |
| Table game | Generic Term | A group of casino games that are typically played on game tables and/or with cards and dice. |
| Ways to Win / 243 Ways to Win | Slot games | A mechanic in which there are no longer any pay-lines but rather 3+ matching symbols in any position on consecutive reels constitute a win. For a 5×3 game window this means 243 possible winning combinations. |
| Wilds | Slot games | A type of slot symbol that will match any other symbols. |
