Having exploded into the online casino world, slots are by far the most popular type of game on offer. The games are quick, easy to play and really diverse, coming in almost every theme imaginable. They can also come with stunning graphics, immersive sounds and lots of exciting bonus features.

To ensure the best possible quality, slot games are developed using a series of tests. These include unit testing, which checks individual components, and integration testing, which tests how everything works together. The best developers also use a Random Number Generator (RNG) to guarantee fairness and equality for players.

Many of the biggest slots software providers are responsible for some of the most popular titles at top casinos. The likes of NetEnt, Microgaming, Playtech and more are behind classics such as Starburst, Book of Dead and Buffalo Blitz.

The most reputable providers will also be regulated by a recognised iGaming authority. This gives players peace of mind and shows that the company is committed to player safety.

Aside from these major software providers, there are plenty of smaller providers who also produce quality slots. These smaller companies often focus on a niche market and are experts in their field. They may be known for their incredible range of Viking-themed slots, for example, or their ability to create games that work on mobile devices.