Game Types
Casino Game
Categories Explained
From digital slot reels to live dealer studios — every major format of casino game, the technology behind it, and the leading providers in each category.
Categories
The Four Main Categories
Online casino games fall into four broad categories, each with distinct mechanics, software requirements, and leading providers. Understanding the differences helps players choose appropriate games and helps operators build balanced game libraries.
FAQ
Frequently Asked Questions
What are the main types of online casino games?
The four principal categories are: slots (spinning reels with various payline structures), RNG table games (digital versions of blackjack, roulette, baccarat powered by certified RNG), live casino games (real dealer games streamed from studios), and other games (scratch cards, keno, crash games, virtual sports, and arcade titles).
Which type of casino game has the best RTP?
RNG table games generally offer the highest theoretical RTPs. Single-deck blackjack with basic strategy can return over 99.5%. European roulette sits around 97.3%. Slots typically range from 92% to 98%, with most sitting between 95–96%. Live casino games mirror the RTP of their RNG counterparts.
What is the difference between RNG games and live casino?
RNG (Random Number Generator) games are entirely software-driven — a certified algorithm determines every outcome. Live casino games use real physical equipment (cards, roulette wheels) operated by a human dealer in a studio, with results captured via cameras and transmitted in real time to players.
Are online casino games rigged?
Licensed casino games are not rigged. Software providers must submit their RNG algorithms and game logic to independent testing laboratories (eCOGRA, iTech Labs, BMM Testlabs) for certification. The RTP and variance of each game is publicly declared and independently verified.
What is volatility in casino games?
Volatility (also called variance) describes the risk profile of a game. Low-volatility games pay out frequently but in smaller amounts. High-volatility games pay rarely but can deliver large wins. The choice between them is a matter of playing style and bankroll management rather than a difference in fairness.
Which casino game type is most popular?
Slots represent the majority of online casino revenue globally — typically 70–80% of total GGR (Gross Gaming Revenue) at most operators. Live casino is the fastest-growing segment, driven by Evolution's expansion and the introduction of game show formats like Crazy Time and Monopoly Live.
Can I play casino games for free?
Many online casinos and software providers offer free-play (demo) versions of their slots and some table games. This allows players to understand game mechanics without financial risk. Live casino games generally cannot be played for free due to the cost of studio infrastructure and dealer staffing.
How do progressive jackpots work?
Progressive jackpots pool a small percentage of every wager across a network of connected games or casinos. This accumulating prize can reach millions. When a player triggers the jackpot (typically through a bonus game or specific symbol combination), the pooled amount is won and the meter resets to a seed value.