Red Tiger is taking us deep into the heart of the jungle with Primate King. You don’t need to be a pop-culture aficionado to see that the slot has drawn inspiration from a certain king of Skull Island, with Red Tiger doing a good job of reimagining the character for a different medium. Those who are fans of Red Tiger’s progression-based rewards are going to find plenty to enjoy here, with the slot offering a range of wild upgrades and other bonus features. Let’s take a more detailed look at this medium volatile free slot in this review and find out what it has to offer.

There have been many online slots that have decided to run with a King Kong-inspired theme in the past, and Primate King is Red Tiger’s effort. Instead of something cheery and cartoonish like King Kong Cash, though, Primate King has opted to go for a more serious and brooding tone, one which brings back memories of Kong: Skull Island or similar movies.

Like most Red Tiger games, the slot looks slick, boasting some subtle and stylish animations and an easy-to-use interface. Getting started is easy enough – players just need to click on the stake button in the bottom left-hand corner. This will open a range of options, with $0.20 being the lowest you can bet and $20 being the maximum. This isn’t a particularly high range and is likely to suit those on smaller budgets.

Primate King is very easy to play. The fun takes place across a 5x4 set-up, though a sixth reel can become active later in the game. There are 30 different paylines active for each spin.

All the other information you might need regarding the game is easy to find. There is a help button in the bottom corner, which will provide you with info on how to play, and the paytable can be accessed using a menu in the top corner.

You will find all of the info about the symbols here. Outside of the wild feature that is the most useful symbol in the game, the highest paying is a box of treasures. The rest of the symbols are made up of miscellaneous items that could be found in the King’s lair.

Primate King may be based in the jungle, but there is nothing primitive about this title. The slot works just as well on mobile devices and is supported on both Android and iOS operating systems. The touch version of the game runs in exactly the same way as the desktop version, and players are not likely to notice any issues in the transition.

Red Tiger is extremely fond of progression-based achievements, and Primate King is no different. To the right-hand side of the screen, players will see a meter with three levels. During spins, symbols will show up with gold coins attached – these coins will then be added to the meter. Once you have collected 30 coins, you will unlock the first upgrade – which turns the standard Wild symbol into an expanding wild covering 1x4 on the reels.

A further 30 coins will unlock the second upgrade, which sees a random multiplier added to the Wilds. Finally, once you hit 90 coins and fill the meter, the Wild will then become sticky, and the multiplier will increase. The Wild symbol will stick on the reels after a non-winning spin and stay there until you manage to land a win. Needless to say, this is an effective system for getting you to stick around and keep playing.

Once you have managed to unlock all three of the Wild upgrades, they will remain in place for the rest of the game. The bonus meter will then convert into a sixth reel on the slot, increasing your chances of a big win.

The slot also wants to keep you engaged when you aren’t winning or adding to the meter. The game has the Primate Smash feature, which can be triggered at random after a Wild lands as part of a non-winning combination. When this happens, the Primate King himself will come and remove all low-paying symbols and fill your reels with higher-paying ones until you secure a win.

While there is no jackpot available in Primate King, there is still the chance to score some big wins thanks to the multiplier system and the three bonuses. Once all of the six reels have been activated and the bonus is in play, players are able to score a nice 3,800x their stake win.

The RTP of the Primate King slot is set to 95.66%.

Your thoughts on progression-based features are going to determine how much mileage you get out of Primate King. If you are looking for a slot that offers easy-to-access bonuses and a free spins round, then you may want to look elsewhere. If you don’t mind persevering to unlock features and be rewarded in the long run, then give Primate King a spin for real money at our recommended slot sites. The Wild features here, once unlocked, can really help boost your winnings, getting to them just takes some time.

Outside of the features, there is still plenty to enjoy here. The gameplay is simple but effective, and the graphics are good. The high volatility will no doubt turn away a few players, though, as will the lack of higher wagering options.