There are more than 40 individual online casino software providers who, between them, have developed an exciting range of more than 2000 online slot machines. Some have stood the test of time and have been around since as far back as the mid-1990s and others have simply faded away and cannot be found any more.

Some of leading online casino software providers to have developed the very best online slot machines include companies like Betsoft Gaming, Sheriff Gaming, WMS Gaming, Net Entertainment (NetEnt) and of course, Playtech and Microgaming. UK players will have no trouble in finding any of the slots developed by these companies.

Some of the very best slots from Playtech mainly include their collection of branded Marvel slots such as Wolverine, Captain America, Iron Man (1, 2 and 3), Ghost Rider, The Avengers, The Incredible Hulk, X-Men, Thor – The Mighty Avenger and Spiderman: Attack of the Green Goblin. These slots are all connected to the same progressive jackpot network known as the Playtech Marvel Multi-Level Progressive.

Apart from these action & feature packed Marvel slot machines, some of the other top playtech slots include Beach Life, Plenty ‘O Fortune, Little Britain, Cowboys & Aliens, The Sopranos, Rocky, Piggies and the Wolf, Monty Pythons Spamalot, Highway Kings Pro, Gladiator Jackpot, Kong, Marilyn Monroe, John Wayne, Battle of the Gods and Britain’s Got Talent.

Some of the very best Microgaming slots that you will probably enjoy playing on include titles such as The Dark Knight, The Dark Knight Rises, Lara Croft Tomb Raider, Tomb Raider – Secret of the Sword, Thunderstruck, Thunderstruck 2, Immortal Romance, Gold Factory, Battlestar Galactica, Playboy, Mega Moolah, Break Away, Agent Jane Blonde, The Finer Reels of Life, Adventure Palace, Jason and the Golden Fleece, Sovereign of the Seven Seas, Break da Bank, Alaskan Fishing, Hitman and Hellboy.

Betsoft Gaming and Sheriff Gaming mainly specialise in developing 3D online slot machines and over the past couple of years, both companies have managed to produce a fantastic portfolio of 3D slots such as Spartania, Oonga Boonga, Beauty and the Nerd, Billion Dollar Movie, Piggy Bank, Frog Royale, French Cuisine, Magical Forrest and The Amsterdam Masterplan (these ones were all made by Sheriff Gaming).

Some of the best Betsoft Gaming slots include The True Sheriff, Who Spun It, Under the Bed, Greedy Goblins, After Night Falls, Miles Bellhouse and his Curious Machine, Safari Sam, Rook’s Revenge, Mamma Mia, A Night in Paris and also Ned and His Friends.

UK players can also find the following great slots from NetEnt and WMS Gaming, all of which are now widely available: South Park, Creature from the Black Lagoon, Mega Fortune, Fisticuffs, Frankenstein, Elements – The Awakening, Gonzo’s Quest, Scarface, Jack Hammer (1 and 2), Magic Portals, Jack and the Beanstalk, Reel Rush, Starburst, Secret of the Stones, Victorious, Wild Rockets, Thief and Twin Spin (all by NetEnt).

Other great slots include Bruce Lee – Dragons Tale (aka Bruce Lee 2), Samurai Master, Wizard of Oz Wicked Riches, Wizard of Oz Ruby Slippers, Spartacus Gladiator of Rome, Bier Haus, Kiss – Shout it out Loud, plus an entire range of original Star Trek themed slots and also Alice and the Mad Tea Party (all by WMS Gaming).