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In an average online casino, you will almost always see slot machines organized by genre and, less often – by different themes. Separation into classes serves a slightly different purpose, but the idea is the same: the slots are grouped by game types, ways of hitting jackpots , and other factors. Among the most common are Class 2 and Class 3 slot machines, which offer various gaming experiences. Why should an average player care? Read more to find out!
The classification exists due to the federal regulations in the US that were introduced to supervise brick-and-mortar parlors. Classes primarily determine which math engine is used as the game’s backbone. While the outcomes of Class 2 and Class 3 machines are fine-tuned to fit the regulated payout frequency requirements, they essentially function on two different algorithms, each more fitting for a particular game type.
Class 3 slots are powered by random number generators. These algorithms are unpredictable enough to make sure you get maximum randomness when you play online casino slots.
Class 2 games share a commonality in their underlying principles, not requiring complex independent mathematical operations. A single server generating bingo numbers is all that's needed. Whether you're into video poker, video keno, or electronic bingo, they all operate on these versatile principles.
When you spin the reels in Class 2 games, you're technically playing a game of bingo. The result of each "spin" is determined by a central server that randomly generates numbers and cards. Class 3 games all have a built-in RNG, which is more expensive to develop, implement, and maintain.
Class 3 slot machines are not something a small or mid-sized casino can afford, so they are predominantly found in elite-level parlors—think Las Vegas and similar gaming capitals. Class 2 games are often found in more modest casinos—in the US, these are local family businesses run under the exclusive Native American permit.
Class 3 slots are naturally more advanced and can handle math operations otherwise impossible. This allows for complex bonus features, enables progressive jackpots, and generally leads to bigger payouts. To make up for that, Class 2 games are eager to part with wins more frequently.