Traditionally, slots had three reels, but modern slots have between three and nine reels, with one to five symbols on them. Virtual reels can be as long as the designer likes, meaning more space for money-spinning symbols.

With classic slots, players must get three matching symbols from left to right, starting on the first reel, to hit a winning combo, however, some games pay combinations out of sequence (with non-matching symbols in between).

There is usually a minimum of 20 paylines and around 1,000 ways to win, but some modern games have fixed paylines, meaning you must wager on all of them.

Multi-way games are also different. Instead of defined paylines, matching symbols anywhere on adjacent reels from the left to the right result in a win! Players can try to win big jackpots with spins starting at 1c and even five winning symbols in a row can pay a 1,500-coin jackpot.

Wilds: These act as substitutes for other icons, helping you score a winning line. They usually have ‘Wild’ written on them.

Scatters: These activate the slot’s bonus game, often free spins, and don’t need to appear on a specific payline to give a win. The number required to give a win varies.

Free spins: The reels will spin, allowing players to get a chance of hitting a winning combo, with no impact on their credit balance.

Pick bonus: Players must blindly choose a bonus from a selection which includes multipliers, instant wins, and bonuses.

Multipliers: These are disguised as symbols and can boost winnings by double, treble, or more.

Reliable casinos offer various rewards, such as a welcome bonus, a no-deposit bonus, or free cash. Some even offer lost bet insurance. These all keep your bankroll topped up, but always check the small print and the wagering requirements.

Loyal players can also enjoy VIP programs and rewards schemes, with prizes such as free spins, holidays, and cashback.

If you're playing at the bigger stakes, you can earn massive progressive jackpots. Players with healthy wallets can win life-changing prizes by hitting the right payline or by triggering a special bonus round.