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All Star Knockout Ultra Gamble Slot

All Star Knockout Ultra Gamble
All Star Knockout Ultra Gamble
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Updated: 22.07.2025
Reviewed by: Fabio Duarte
Classic slots never seem to go out of style considering how popular are they in online casinos. While many consider them outdated, modern studios pack retro gameplay with modern features, creating unique titles that no player is immune to. Such is the case of All Star Knockout Ultra Gamble, released on 01/07/2020, a Northern Lights Gaming release that looks like a classic slot, but plays like a modern title. In this All Star Knockout Ultra Gamble slot review, we’ll tell you everything about it. Most importantly, we’ll show you why it’s better than other slots of its ilk.

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In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Sipns
  4. Summary
  5. Where to play
General information about All Star Knockout Ultra Gamble slot

General information about All Star Knockout Ultra Gamble slot

Rating by Fabio Duarte:
6.9
Northern Lights Gaming
Write a review +25 SJ points
  • Release Date:
    01.07.2020
  • Volatility:
    Low
  • RTP:
    96.1%
  • Multiplier:
    Yes
  • Max. win:
    4,503x
  • Bonus game:
    Yes
  • Free spins:
    Yes
  • Scatter Symbol:
    No
  • Wild symbol:
    No
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    20
  • Slot reels:
    5
  • Layout:
    5-4
  • Stakes range (€/£/$):
    0.2 to 100
  • Slot Theme:
    Fruits
  • Technology:
    HTML5
More infoLess info

Licensed and tested by

  • Alderney
  • Gambling Comission
  • MGA

How to Play

Playing the All Star Knockout Ultra Gamble online slot is no rocket science. If you played any other slot on the web, this one will be a breeze. The layout is pretty familiar so even if you’re a first-time slot player, you’ll have no problem understanding it.

Before you do that, though, you will have to pick a reputable casino. That’s easier said than done, but if you stick to the list from the previous paragraph, you’ll be OK.

  • Choose a casino from our list – they’re 100% safe to join
  • Sign up for a new account or log in if you already have one
  • Enter the game library - All Star Knockout Ultra Gamble should be on the front page
  • Play the demo to see if it’s up your alley
  • Deposit into your account and play for real money if you like it

Players can choose bets from €0.20 to €100 per spin when they play All Star Knockout Ultra Gamble. You’ll have no problem with the layout as all controls are in their usual spots. As a classic slot, it features sevens, stars, cherries, lemons, and plums, so it’s an obvious homage to vintage Vegas slot games.

The slot has 20 fixed paylines and a 5x4 layout. They pat traditionally for three matching symbols from left to right. The slot has no jackpot on offer, although the biggest prize certainly comes close.

All Star Knockout Ultra Gamble RTP and Volatility

7.8 
In this slot the RTP of 96.1% during the base game is paired with low volatility.

The 96.1% RTP during the base game does the low volatility justice. All Star Knockout Ultra Gamble pays frequently thanks to the low variance, with lower wins in the base game and bigger in the bonus round. The fruit-themed slot’s award board is populated by the stars that land on the reels, boosting regular wins in the base game.

Get to the bonus round and that’s where the slot’s winning potential truly shines. Players can also enable the Ultra Gamble feature to remove certain symbols from the grid and get multipliers in the mix for truly big wins. During the Ultra Gamble feature, the RTP varies and can be 96.7%, 97.2%, and 97.8% depending on the number of Stars.

Theme

6 

All Star Knockout Ultra Gamble is a vintage slot machine through and through. It looks and feels like one, with the hyped-up music a perfect companion to the action on the reels. The reels are set against bright blue background with stars flying in the air. On the 5x4 grid, you’ll see sevens in different colors as well as various fruits including lemons, cherries, oranges, and plums.

It’s obvious that the slot drew great inspiration from fruit-themed slots. Northern Lights Gaming has done a great job with the visuals and presentation to make it look like one.

There are eight symbols in total divided into high, medium, and low-paying symbols. The KO, red, and yellow seven pay the most. They’re followed by the cherries, orange, and blue seven as the mid-paying symbols, and the lemon and plums at the bottom of the pay chain.

Stars complete the symbol list, although they’re a special symbol that doesn’t pay. Randomly on any spin, the slot may reward you with a handful of wilds that populate the boxes below the reels. You need five stars beside a symbol to trigger the All Star Knockout Bonus, with a multiplier up to 5x involved in all wins that involve that particular symbol.

Theme
All Star Knockout Ultra Gamble Slot - Paytable

Mobile Compatibility

Mobile Compatibility
You can play the All Star Knockout Ultra Gamble slot on any PC, Mac, or mobile device. The slot requires no app download if you want to play it on your phone. Just head to your favorite Northern Lights Gaming or Yggdrasil casino and fire up the game from your mobile browser – it’ll work as smooth as butter.

About Northern Lights Gaming

Northern Lights Gaming is a small studio that mostly providers slots for its partner Yggdrasil Gaming. It has released over 15 slots so far which is impressive considering the fact it’s only a few years old. The studio doesn’t stick to one theme. Instead, it likes to mix it up, which creates a diverse library that appeals to all types of players.

Its games impress with great graphics and animations as well as unique features that make them a blast to play on any platform.

Bonus Rounds & Free Spins

6.8 

All Star Knockout Ultra Gamble doesn’t have a lot of features, but the two on offer are more than enough.

Bonus Stars

At the start of the game or at any point where the award board is completely empty, player is awarded 12 bonus stars that randomly populates the board. Bonus stars cannot trigger free spins.

Random Bonus

As the name suggests, this is a random bonus that can be awarded on any spin. It’s a respins round with three Win Spins. In translation, these are three free spins with the difference from a regular bonus being that they guarantee a win.

All Star Knockout Bonus

This is the bonus we mentioned before. It’s related to the number of stars that populate the meters beneath the reels. Whenever you get five besides a symbol, you get five free games in a bonus round with multipliers applied to any win involving the symbol in question.

Low Star Bonus

If the total number of stars is lower than 4, the next spin will activate a bonus which awards a respin with more Stars to fill the award board.

Ultra Gamble

The Ultra Gamble option can be enabled manually. It’s not precisely the same as a Gamble feature. When it’s active and you hit a win, you get a spin on a wheel with eight segments, rewarding free spins if the pointer stops on a green segment.  If you have the Ultra Gamble feature enabled, the RTP jumps up to 96.7%, 97.2%, and 97.8% depending on the number of Stars.
All Star Knockout Ultra Gamble Slot - Ultra Gamble

All Star Knockout Ultra Gamble Demo Play

Before you splash the cash, it’s important to try any slot for free. That’s the case with All Star Knockout Ultra Gamble. You can and should try the slot for fun before you play it for real money. It’s not that it’s complicated, but it’s the right thing to do if you want to check out if it’s what you’re looking for.

Max Win

7 
The top prize in All Star Knockout Ultra Gamble is 4,503x the stake.
The maximum win you can score in the All Star Knockout Ultra Gamble slot is 4,503x the bet. That’s higher than what most low variance slots offer. We were quite impressed by its winning potential. This win can be hit in the bonus round if you manage to score the highest multipliers.

Overall Rating

6.9
Classic slots can be a hit or miss, but luckily, All Star Knockout Ultra Gamble is a hit. It’s a low variance slot with two exciting bonus rounds that can lead to pretty big wins. With wins over 4,503x the stake on offer, this is a vintage slot machine you should definitely try.
Hits
The studio has nailed the vintage look and feel
Two exciting bonuses
Low variance
Misses
Classic slots are still not for everyone
Needs more bonus features

FAQ-section

What’s the RTP of All Star Knockout Ultra Gamble online slot?

The RTP of the All Star Knockout Ultra Gamble slot is 96.1% during the base game which is great for a low variance slot. If you have the Ultra Gamble feature enabled, it jumps up to 96.7%, 97.2%, and 97.8% depending on the number of Stars.

Can I earn real cash prizes in All Star Knockout Ultra Gamble?

Yes, you can. The slot is available in demo and real money mode. Choose the latter, and you can win cash prizes in return.

Does All Star Knockout Ultra Gamble slot have a jackpot?

No, it doesn’t. This is an old-school slot that doesn’t feature a jackpot, but the highest win tops 4,503x the bet which is pretty great.

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Fabio Duarte
Fabio Duarte
Expert in: News, Blog, Slot reviews, Payments
Fabio is a young writer with +6 years of experience in gambling & betting. Fabio creates professional reviews of casino and slots. Every single article Fabio made exhibits deep analytical skill and comprehensive coverage of a topic. It’s Fabio – one of the leading authors on slotsjudge.com.

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