This fun, modern online slot from Yggdrasil leans on Japanese culture to bring you a blend of lucky cats, oni graffiti and of course, those Street Ninjas.

If you’re looking for a laid-back, casual online slot, then Street Ninjas might be right up your alley. It doesn’t take itself too seriously, nor does it cram itself with complicated mechanics, which makes it a great game to play while trying to relax or even while commuting. To find out why Street Ninja has already turned heads, despite being one of the new slot releases in 2025, keep reading this guide.

Street Ninja slot overview

As soon as Street Ninja loads, it’s full of good vibes. There’s a beautiful sunny day in the background, shining down on the streets of Ninja town. A large traditional-style temple stands on the left-hand side of the screen, while a smiling lucky cat waves at us from the right-hand side. The reels are also housed in a very traditional-looking Japanese house, which really helps to tie all of the different aspects of the slot together. It’s an attention to detail that can only come from a developer like Yggdrasil.

The symbols are bright and distinctive on the board, meaning that they’re easy to tell apart from one another. The highest-paying symbols are the Orange Gem, Pink Gem, Blue Gem and Green Gem - and each of these are also shaped uniquely, meaning that if you’re colorblind in any way, then it’s still very easy to tell each of these symbols apart. The lowest-paying symbols are a Cross and the standard Card Suits. While these aren’t Japanese-themed in the same way that the rest of the game is, it might have felt a little too over-the-top if they were. Having neutral symbols in this slot was probably a good decision by the provider, Yggdrasil.

Don’t let the relaxed vibes fool you, though. There are a few different mini-games that can be activated by landing different Blocks containing paying symbols, scatters, key symbols or coins. We’ll go into a full explanation of what each of these mean in terms of gameplay later on in this guide.

Street Ninja slot pay table

If your stake is $1, then the following will pay out:

Who made the Street Ninja slot game?

The Street Ninja online slot game was created by Yggdrasil (pronounced igg-dras-ill), one of the industry leaders in terms of slot and casino-style games. This provider is behind some of the biggest slots in online casino libraries, such as Vikings Go Berserk, Valley of the Gods, Badger Miners and E-Force. We have a full guide for another Yggrasil online slot game, Valley of the Dead, available here.

Yggdrasil was founded in 2013, but quickly found its footing in the iGaming industry. Within the next few years, it had received licences from Gaming Authorities from around the world and expanded into several major jurisdictions. It currently holds licences from some of the strictest countries and gambling commissions, including the UK and Greece.

Through an agreement with IGT, Yggdrasil debuted in the US in 2021 and has only continued to grow since then. By 2025, Yggdrasil has become one of the top US online casino providers and has even helped smaller studios establish themselves in the jurisdiction.

Pros and Cons of Street Ninja

+ Very fun and light-hearted vibes

+ Establishes a story and reason for gameplay, which shouldn’t be overlooked when created games!

+ Responsible gaming tools are implemented naturally into the game

- Some players might not like how high the volatility is with this game

- The Bonus Buy Feature is expensive and may not be available everywhere

Street Ninja slot table

Street Ninja slot features

During the standard Street Ninja gameplay, giant blocks can land on the reels at random each spin. Sometimes, these are just giant versions of one of the symbols, coins or a random block. This is actually a fun feature, mainly because of how often it happens!

Monster Blocks: These giant blocks can land on the reels at random and will dominate when they do! These are usually 2x2 big - but we did manage to land some that were 3x3! - and can contain any symbol from the board on them.

Synced Blocks: These giant blocks land with a distinctive '?!' symbol on them. These mystery blocks will always sync up together, meaning you could have two 2x2 giant matching symbols on the board at once.

Coins: Before symbols land on the reels, there’s a chance that you’ll open a door to a 2x2 grid of coins. These are collected immediately as a cash bonus and can go up to 1,000x.

Keys Bonus Game: If you land at least five keys on the reels, then you’ll activate the bonus game! This will take you to a separate screen with a six-tiered classic castle with sliding doors. Depending on how many keys you land, you’ll unlock a different level of tiers. This isn’t the only way to rise through the ranks, though, as once you land three coins in your row, the floor above you will open up. Each time a coin lands on one of the open floors, the free spin counter will reset, giving you more opportunities to land more coins and open up more floors. Once you either clear the tower or run out of free spins, the coins will be collected, added up and applied to your wager.

Free spins: If you land at least five Free Spin symbols, you’ll trigger the Free Spins bonus mode. This takes place during the night, so say goodbye to the sun, and say hello to the underbelly of Ninja Town! For each five Free Spin symbols you land, you’ll increase the multiplier along the top of the screen and also increase the number of free spins by +1 each time.

Golden Bet: For 0.2x extra each wager, you can increase your chances of triggering the Bonus Game or Free Spins, but this is placed at a 94% RTP.

Bonus Buy Feature: If you’re playing Street Ninja in demo mode or you’re simply feeling impatient, there’s also the opportunity to Buy the Bonus features directly - however, the wagering requirements are a little steeper than some of the other popular online slot games!

For 70x your wager, you can buy five keys which will trigger the first level of the Keys Bonus game, but for 150x your wager, you’ll get a random amount of keys which has the chance to unlock a random amount and potentially more floors of the tower before you even begin.

For 90x your wager, you can get five scatters, which will trigger the free spins, but for 140x your wager, you’ll start with potentially more free spins.

Does the Street Ninja slot game offer free spins?

The developers at Yggdrasil offer a few different ways to get free spins at this online slot, whether it’s through the Coins mini-game or the Free Spins symbols. This variety keeps things interesting and fun while you play Street Ninja, especially as neither of them operate in the same way as the base gameplay.

Also worth noting, both the Coins mini-game and the slots Free Spins give you ways to obtain more free spins once you start. You just need to land more Coins or more Free Spin symbols and you’ll get more time in those slot bonus rounds.

Street Ninja slot conclusion

Street Ninja is a very good online slot that understands how to keep things simple while keeping them fun. There are a few different bonus modes, but they’re easy to understand and keep the flow of the gameplay going at a nice pace. The Coins mini-game is a nice touch, as it makes it feel like a distinct mechanic, when it’s just free spins, but in a different font.

While the Bonus Buy features are more expensive than many popular online slots at the moment - with the cheapest option priced at 70x the wager! - the Golden Bet option navigates this with a little more grace and offers players a higher chance of triggering the Free Spins or Coins mini-game for 0.2x extra each bet.

Aesthetically, Street Ninja is also top tier. The colors are bright and the background has a lot of attention to detail, which is something that we love to see. Too many slots simply whack the reels down on something simple and hope the gameplay carries the experience, but this isn’t what Yggdrasil is about. This slot provider wants to ensure that the entire game is perfect, down to the graffiti spray-painted on a wall in the background!