Online Casino Slots Guide

Idag skriver vår engelska gästskribent ett inlägg åt oss, översättning lär inte behövas då det mesta i denna värld är engelska inspirerat. För er som funderar över casino utomlands kan detta inlägg ge en nyttig inblick i den internationella spelmarknaden.

Online slots are the most popular games at online casinos. Nearly 70% of a casino’s income is from popular slot games. In this online casino slots guide we want to give you an overview of the most popular slot games, the different slot types and gaming providers.

Popular Slot Games

These are some of the most famous slots of all time:

  • Immortal Romance
  • Book of Ra
  • Mega Fortune
  • Starburst
  • Thunderstruck
  • Mega Moolah
  • Gonzo’s Quest
  • Age of Gods
  • The Wizard Of Oz

Pros and Cons of Famous Slot Machines


  • Easy to find
  • Very good bonus rounds
  • High payouts
  • Can be played on all devices


  • Some progressive slots have lower RTP rates

Types of Slots

There are many different types of slot games in online casinos. This is a quick overview of all the different types.

Three-Reel Classic Slots

This is the original slot machines invented by Charles Fey. Nowadays these classics slot are there for their nostalgic value. The modern technology is replacing the three-reels.

Five-Reel Video Slots

The extra reels offer more symbols, combinations and paylines. The payout schedule increases because the machine takes in more money as player bet on more paylines.

Progressive Slots

On a progressive slot machine a small percentage of the bet is diverted to the progressive jackpot pool and can be as high as 15% depending on the online casino. The progressive jackpot pool increases until someone wins it. Because some of the bet is channeled to the progressive jackpot pool the payout for other winning combinations is less than they would otherwise be.

Stand-Alone Slots

For players who want to play for a long time and to conserve their bankroll stand-alone slots are the type to go. Since there is no progressive jackpot the payouts re higher.

Multi-Payline Slots

In multi-payline slots every slot machine has “lines”. When a winning combination appears on the line it becomes a “payline”. Modern machines take more coins and have many more paylines.

The original technology only allowed one line. Computer software allows many more nowadays. The common number for multiple-payline slots is 15 to 25 paylines and for the programs it’s even possible to read diagonally and zig-zag.

Buy-a-Pay Slots

On buy-a-pay slots each coin you put in buys a winning combination. If you put in the correct amount of coins and a winner comes up you get paid. If you haven’t put in the coins that activate a particular winning combination you don’t get paid even when that combination comes up.

3-D Slots

3-D slots are a new generation of slot machines. The slot action is combined with a three-dimensional storyline. Because the 3-D technology is quite new there are fewer online casinos offering them.

The Best Casino Software Developers

There are a lot of competing online casino providers on the market. Some casinos have games from multiple providers on their websites. Some of the common names in casino software development are:

  • Microgaming
  • RabCat
  • Playtech
  • NetEnt
  • NYX Gaming Group
  • Red Tiger
  • Evolution Gaming
  • Pragmatic Play
  • Quickspin
  • Betsoft Gaming
  • Realtime Gaming

These providers cover a broad range of factors like experience, quality and number of games. Microgaming have been active since 1994 and is one of the oldest online casino providers around.