Tournaments Bonuses

Slingo Classic 30th Anniversary

Review, Demo Play, Payout, Free Spins & Bonuses

Slingo Classic 20th Anniversary is an online slot developed by Slingo Originals that combines elements of slot machines and bingo. It is played on a 5x5 grid and has an... RTP of 95 per cent and medium volatility. Features include wilds symbols and free spins. 

Slots Temple Content Border
3 Votes
3.1 out of 5 stars
Write Review
Slots Temple Content Border
  • Innovative slingo gameplay model
  • Retro throwback to classic game
  • Top prize of 500x the initial stake
  • You need to hit spin each time
  • Somewhat confusing paytable layout


Relive the title that began it all for Slingo Originals with this reworking of the original Slingo Classic title. Refreshed for its 20th anniversary and with a 5x5 grid and 12 lines to play, this title will be familiar to slingo converts whilst looking a little different to anyone who has never encountered a Slingo Originals title before.

Slingo Classic is played a lot like bingo, with elements of an online slot thrown in. The rapid gameplay consists of 11 core spins, which you get for your initial stake, and a range of paid-for spins that can be taken if you choose, one at a time, following the core spins.

Fill lines on the game board to win the prizes displayed onscreen, with a full house netting you 500x your initial stake.

Theme, graphics & soundtrack

The look of Slingo Classic 20th Anniversary is very similar to the original Slingo Classic title. The graphics have been tidied up and sharpened to bring it into 2021, of course, but this is like stepping back to the days of dial-up internet with 256 colours and blocky graphics. 

Whilst many retro titles use ultra-modern graphics to recreate jukeboxes and other vintage objects, this title has the look of something far crisper in many minds, which makes a refreshing change. 

One gripe has to be with the way in which the paytable has been arranged. With win amounts displayed in two columns, this creates something of a jumble of numbers on the screen.

There is no in-game soundtrack, as you probably would expect from an online title in 2001 given the bandwidth limitations, and the reel and win sounds will probably become grating over time as they ping and beep at you.

Slingo Classic 30th Anniversary

Slingo Classic 20th Anniversary RTP and variance

Slingo Classic 20th Anniversary has a long-term average RTP of 95 per cent, which is spot on the average for slingo titles if a little low for traditional online slots. The medium variance suggests balanced gameplay, although remember that the top wins do not come around often.

How to play Slingo Classic 20th Anniversary

  1. Set your bet by using the round buttons to the bottom left of the game board. These buttons move you through the bet options from smallest to largest.
  2. As your bet changes, the paytable above the bet selection buttons will change to reflect the stake wagered on the game. For more game rules, click the three-line button to the top right and then the help icon.
  3. If you are happy with your bet level, click the start game button to the bottom right.
  4. Following each spin, numbers will be marked off the game board if they appear in the bottom row. 
  5. If a joker appears, you must select one of the highlighted numbers to cover to continue.
  6. Once the core spins have been used up, you have the option to pay for additional spins. The price of these may outstrip the initial stake considerably. Be responsible with your choices so as not to go over budget or sink too much into a game.

Bet sizes & paytable wins

Games of Slingo Classic cost from 0.20 and go up to 25.00. Your initial stake pays for the 11 core spins, with the cost of paid spins running proportionally from this.

Get a full house to win the top prize of 500x the initial bet. Money spent on extra spins does not change the amount of money to play for on the board.

Filling lines will pay out the following multiples of your initial bet:

10 lines = 100x
9 lines = 20x
8 lines = 10x
7 lines = 5x
6 lines = 3x
5 lines = 2x
4 lines = 1x
3 lines = 0.3x
2 lines = 0.2x
1 line = 0.1x

Slingo Classic 30th Anniversary
Max-win 125x
Slingo Classic 30th Anniversary
Volatility Medium
Slingo Classic 30th Anniversary
Top RTP 95%

Slingo Classic 20th Anniversary bonus features


Jokers and super jokers are wild symbols and enable you to select numbers on the game board. It is always a good idea to select numbers that have the best chance of completing a line.

Free spins

Free spins are available in Slingo Classic and are won by landing a free spins token on the number row following a spin. Your free spins will be taken at the end of the core 11 spins. Free spins are not available once the core spins have been completed during the paid portion of the spins. For more titles with this bonus feature, check out our index of games with a free spins round.

Slingo Classic 20th Anniversary review: our verdict

Slingo Classic 20th Anniversary is a great addition to the Slingo Originals portfolio. It gives players the chance to step back in time and look at how this gaming giant got started. That said, a more modern twist could have been employed in the spin mechanic and the somewhat confusing paytable layout. All in all, this will engage fans of slingo titles, even if only for a short while.

Disclaimer: Slingo Classic 30th Anniversary trademark / license is owned by Slingo Originals. This site is not endorsed by Slingo Originals.

Slot Data
Slot Name: Slingo Classic 30th Anniversary
Software: Slingo Originals
RTP: 95%
Volatility: Medium volatility
Paylines: 12
Reels: 5
Min Bet (all lines covered): £0.20 (GBP)
Max Bet: £25 (GBP)
Top Win: 125
Features: Scatter Symbol, Free Spins, Medium volatility, 5 Reels
UK Available in UK? Yes. Slingo Originals have a UKGC license and are allowed to offer their games at UK licensed casinos.


Can Slingo Classic 20th Anniversary be played for free?

Yes, the Slingo Originals demo slots functionality enables players to explore the gameplay of these titles for free. Playing for free is advised for most online slot titles and is vital when playing something out of the ordinary, such as Slingo Originals titles.

Are there other slingo titles to explore?

There is a whole range of Slingo Originals titles you can take a look at. This developer refines its gameplay and moves with the times when it comes to graphic design; for example, check out the brilliant Slingo Fortune, which is a Chinese-inspired slingo title with innovative gameplay and gorgeous graphics.

Games by Same Maker

Slot Name RTP Volatility Top Win Themes
Baking Bonanza 96.47 Medium volatility 250000
Bar X Colossal 95 High volatility 250000
Bar X XL 95 250000
Book of Slingo 96.38% 500
Deal or No Deal... 95 High volatility 100000
Dragons Gems 95 High volatility 50000
Frooti Booti 95.8 Low volatility 50000
Hot Stepper 95.5 High volatility 2500
Kat Ching 95 Medium volatility 250000
Mad Scatters Te... 95.3 Medium volatility 100000
Monopoly Slingo 95.3 Medium volatility 100000
Red Hot Slingo 96.33% High volatility 500
Slingo Advance 95% Low volatility 10000
Slingo Ante Up 95% High volatility 500
Slingo Berserk 95% Medium volatility 1000
Slingo Big Wheel 95.55% High volatility 2500
Slingo Britains... 95 Low volatility 1000
Slingo Carnival 95.6 Medium volatility 100000
Slingo Reveal 95 High volatility 250000
Slingo XXXtreme 95 Low volatility 10000
Wild Rover 95.5 High volatility 125000
    Slots Temple Content Border
    User Reviews
    Write Review
    Overall score: 3.1 out of 5 stars
    Slots Temple Content Border

    There are no reviews for this game

    Be the first to write a review