Find the best online casinos for online slot machines at Online Casino Slot Machine! See our top online casinos list right below! USA players welcome at some of our top casinos.

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Casino Slots

The slot machine is one of the most popular games ever invented, and the most successful gambling game ever created. It's a big business that generates billions of dollars annually and has players from all over the globe. Playing slots is a very pleasurable experience to many people, and the possibility of winning a huge price keeps you going, always wanting to play more. Winning the jackpot is hard but the thrill will always be there so long as you have a chance of hitting it.

We have searched almost the entire World Wide Web for the best casino slots in online casinos and we believe we have found the ones that have the widest selection of casino slot machines: they are casinos that run on Playtech software. Playtech slots are simply the best virtual incarnation of the classic slot machine. Look for online casinos that are powered by Playtech software to experience the very best of online slots (their video slots are particularly great), and check the casino's promotions and bonuses before you register with them.

Since Playtech-powered online casinos have the same high-quality online slots, which casino should you choose? Look for the best bonuses and promotions. You can get free signup bonuses of up to €/£/$1,000 at MegaKings Internet Casino, and up to €/£/$400 signup bonus plus bonuses on every deposit at La Isla Online Slots Casino. These Playtech casinos have the best casino promotions, and they also offer an excellent customer service.

Classic 3-reel, single-line and multi-line online casino slot machines

Why not join the thousands of gamblers already playing and winning loads of cash! If your interest extends beyond online casino slots, and you're also interested in other online casino games like poker, blackjack, craps, bingo, or arcade games, Playtech casinos have an ample repertoire of table games and other non-slots games.


U.S. Players

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Looking to play online casino slot machines for money? Scroll down to our American-friendly casinos section.

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Featured Online Casino

Spin Palace Casino

Spin Palace lobby

Spin Palace is one of the most well-known online casinos around the world. Using Microgaming online gaming software, Spin Palace has the best games and biggest jackpots in a gaming environment that constantly exceeds all expectations.

Spin Palace boasts an average payout ratio of 97%, along with excellent customer service in various languages and constant promotions, campaigns and special loyalty bonuses for regular players.

Payments are done in a secure environment and a wide range of deposit options are available, including MasterCard, Visa, Firepay, Neteller, Switch, Delta and many others.

Read full review   —   Play now >>

Featured USA Casino

Due to online gambling legislation sneakily passed by Congress in 2006, online casino operators face difficulties in operating in the US market. The result of this is a reduction of choice for American players.

Among the reputable US-friendly casinos, we consider the RTG-powered casinos to be the clear winner, as the other softwares are simply not as good.

Grand Parker Casino

Grand Parker Casino is a great place to play for USA based players. It uses state of the art software from Real Time Gaming and offers one of the best and most secure payment processing systems around so that you can be sure your deposits and withdrawals are dealt with safety and confidence.

Grand Parker

At Grand Parker Casino you can enjoy over 100 of the best online casino games in the business. Check out the Casino Games by clicking the Instant Play button on the casino homepage or for even better graphics you can download the Real Casino lobby using the download button.

This RTG online casino are offering all new players an amazing welcome bonus of up to $8,000 free over their first three deposits. First, you can take advantage of a 250% bonus for your first two deposits. Then, follow that up with an even higher 300% on the third deposit.

This means that you can get up to $8,000 in bonus money to use on Grand Parker's thrilling slots machines!

Play at Grand Parker Casino >>

Featured Online Slot

The Dark Knight

The Dark Knight slot machine

The Dark Knight arrives to Microgaming online casinos! Fans of the comic series and slot machines will definitely not be disappointed with this one, its only major problem being that it cannot be played for free.

This will become known as the Batman Slots Game, as it is poised to become one of Microgaming's most popular casino slot games.

The graphics and special effects are superb, with cinematics interspersed along the game as you unlock features like free spins and a bonus round. When you score a "Big Win" you will be shown action-packed scenes from the movie.

The Dark Knight slot machine

Like with The Lord of the Rings slot, Batman Slots uses a special effect named Cinematic Spins. As you spin the reels, the reels will become transparent and action sequences from the film will play in the background. Microgaming calls this a whole new technology, dubbing it "Cinematic Spins".

On the main game screen itself there is plenty of animated stuff going on. For example, at any time in the game, Batman will appear and transform one of the reels into a stacked Wild. Joker will also show up to drop a bomb on the screen, revealing a cash price in the process.

For some reason Microgaming decided to make this game very dark, too dark. The game can be appreciated more by increasing the brightness of your monitor.

Be aware that this is a progressive slot machine, which unfortunately means that you can only play it with real money, not with a fun account.

The Dark Knight slot machine

The progressive jackpot is played out in the roulette wheel round, where you will win one of four progressive jackpots, the biggest of which would make you a millionaire!

Play at Royal Vegas >> Sign up now and enjoy up to $/€1200 free in bonuses on your first 6 deposits

Previously featured slot machines