The first slots had 3 reels and today there are lots of 3 reel slot machines all around. 3 reel slots can be classic, video, multiline, progressive or bonus. Almost all of them can be played in a free play mode as well as in a real money play mode in the online casinos. 3 reels slots have simple rules. You must make a bet and click “spin”. Once the reels have stopped, you will see whether you win or lose. Most of 3 reel slots are classic machines.
A Classic Slot is a slot that has 3 reels and 1 payline. Nowadays there are multi-line classic slots which have 3 or 5 paylines. The maximum bet is 1, 2 or 3 coins. Combinations consisting of three similar (sometimes two or even one) symbols from left to right win. Modern classic slots machines have a bonus feature to be played on the second screen or on the reels. There are 3 reel slots with progressive jackpots. The most famous are Fruit Fiesta, Safecracker.
Some software providers such as Microgaming offer Mega Spin Slots. These slots are similar to multi hand video poker and allow you to play the same slot up to 9 times at once.
Some gaming software companies such as Playtech develop multi spin slots. This sort of slots is alike video poker multihand games. You make a bet and spin the reels. Once the bottom payline stops, you can hold one or more reels which have the symbols that can help you to win. Then spin again; this time only unheld reels are spinning.
Most modern online slots machines have 5 reels. They are usually video slots and have state-of the-art graphics that’s why they are more exciting than classic slots. 5 reel slots have between 5 and 30 paylines, but there are 5 reel machines with 50, 60 and even 100 paylines. Almost all 5 reel slot machines offer bonus games and often more than one. Most progressives have 5 reels.
To play the game you have to make a bet, set the number of lines and coins. You don’t have to bet on all the paylines, you can play as many lines as you want. Once you have made a bet, click “Spin” and wait for the result. A combination consisting of 3, 4 and 5 (sometimes 2) similar symbols from left to right (rarely from left to right and right to left) wins. The scatter pays out regardless of the fact where it is. Most online casinos permit trying out the slots for free.
A lot of modern slots machines have bonus features. Bonus games can be played on the reels and on the second screen. The most popular bonus game on the reels is Free Spins. Slots offer players from 3 to 100 and even more free spins. Often free spins have multiplier. Among the other features on the reels are Nudge, Hold and Shifta!, ‘Pick an Item’ bonus games.
Bonus games on the second screen are ‘Wheel of Fortune’, ‘Pick an Item’, 'Pick until Pop' and Gamble Game.
Perhaps, progressive slots are the most popular type of slots machines. Progressive slots are slots with a progressive jackpot as the top payout. The progressive jackpot is created by a small share from each bet made on the same slot in different online casinos all around the world. That’s why jackpots are growing very quickly until someone hits it. You can see the size of the jackpot above the reels. Some jackpots are more than $1 million. However, the odds of winning the progressive jackpot are low especially if it is huge. Most progressives require you to follow definite rules to qualify for the jackpot, for example, you must make the maximum bet. The most popular progressive game is Mega Moolah from the leading gaming software provider, Microgaming.