Dr Toonz

Dr Toonz Slot Review

NOTE: Screenshots on this page were taken whilst we played this game for real money at Casumo Casino

Game Scorecard

How We Review Slot Games

We test and rate all slot games across 5 criteria, assigning a score out of 10 for each and an overall score that is an average of the 5. To build an accurate assessment of each game we gather information from the supplier and play in real play or demo mode. Find out more.

Overall Score


Game Information

  • Name: Dr Toonz
  • Game Suppplier: Play n Go
  • Release Date: September 2021
  • Theme: Cartoon
  • RTP: 96.25%, 94.25%, 91.25%, 87.25%, 84.25%
  • Variance: High
  • Maximum Win: 22,000x
  • Progressive Jackpot: No
  • Minimum Stake: £0.20
  • Reels: 6
  • Rows: 4
  • Paylines: 4,096
  • Features: Cascading Wins, Transforming Symbols, Wilds, Quantumeters, Pay Both Ways

About Dr Toonz

Amongst Swedish outfit Play n Go’s huge catalogue of slots are the stand-out grid games, Reactoonz and Reactoonz 2. Famed for their devilishly good payout sequences driven along by win cascades and special symbol meters that unleash extra modifiers, the release of the second in the series was one of the highlights of last year’s game road map. They are also particularly memorable for the crazy critters that inhabit the grid. Now it seems that Play n Go are taking us to the very lab that spawned these creatures in Dr Toonz, a game featuring a mad slots scientist intent on inventing new and crazy games and features.

The similarities between Dr Toonz and the Reactoonz games aren’t just in the name though. The colorings and weird, ‘minion’-type things in the test tube-based reels are also reminiscent of those grid games. The main difference though, is that this is a standard reel-based slot rather than a grid, initially starting as a 4,096 win-ways game, though with potential to expand to as high as 262,144 paylines. That means you start out with 6 reels and 4 rows, then let Dr Toonz’s experimental expanding paylines feature take you to new places, all enhanced by reel modifiers, wilds and free spins.


What We Liked

  • High payout potential
  • Cool theme from Reactoonz games
  • Up to 25 free spins
  • Transforming symbols boost paytable
  • Lots of wilds

What We Didn't like

  • Not as compelling as Reactoonz
  • Risky pay model

About The Developer

  • Name: Play n Go
  • Established: 1997
  • UK License: Remote 021725-R-304911-020
  • Total Games: 200 +
  • Known For: Grid slots, high variance slots, huge range of themes, styles and maths models
  • Popular Slots: Book of Dead, Reactoonz 1 and 2, Troll Hunters 2, Rise of Olympus

RTP and Variance 8/10

What is RTP?

RTP (Return to Player) refers to the amount a game will pay out in cash prizes expressed as a percentage of all the money wagered on that game. For example, a 96% RTP means a game will pay out £96 for every £100 wagered. This is an average number and will vary from one session to the next.  Read more here.

What is Variance?

Variance refers to how far a game will deviate from its RTP over time. High variance games deviate a lot and produce uneven win distributions and unexpected windfalls. Low variance games provide a more stable and even distribution of wins. Read more here.

Like its Reactoonz sister games, Dr Toonz is a high variance slot, measuring an 8/10 on Play n Go’s own scale, which suggests a tight model that won’t give much away until the free spins are unlocked. And as we will see there is a lot of potential to build win sequences there where modifiers combine. As for the RTP that is set to an average of 96.25%. The top payout is advertised at 22,000x, which is fair but under the level of some of the most aggressive high variance games currently on the market.

Paytable 8/10

First up, this is a 4,096 payline slot in the base game. That means it pays out when identical icons land on adjacent reels from left to right, regardless of position. Famous 4,096 payline slots include games like Pink Elephants from Thunderkick and Raging Rhino from WMS. There is a neat difference here though – above each reel a number may appear on any spin, and when it does, it increases the number of paylines that can run though that reel. So the potential of the game is significantly boosted by this feature.

You’ll need 3 or more matching icons to trigger a win.

The symbols themselves are simple enough – just four one-eyed monsters for the lower value set and 4 two-eyed monsters for the higher value set. It is notable however that values are lower than most slots – the max win available for premiums is just 1x for one payline. Remember though that in this instance the low values are offset by the high number of paylines possible and the modifiers that come as consecutive cascades drop.

There is also a wild that subs for all other icons and pays out at 2x when six drop on a line.

Gameplay & Features 9/10

Like the classic expanding reels games in the Megaways™ series, Dr Toonz uses a Cascading Reels format, and combining this with special meters that fill up and release modifiers, can lead to mayhem on those reels.  A bit of patience is required to see this happen, but overall the good Dr appears to have some potent mixes to bring us here.

Expanding Paylines

Before we get into the other stuff, a word on the expanding paylines. These are triggered when a 2x graphic appears at the top of any reel. This creates more paylines when a winline passes through that reel. If all six reels show a 2x then the fully-expanded paytable is on offer at 262,144 paylines.

Cascading Wins, Quantumeters and Modifiers

Nothing new here – when a winning spin lands, so the winning icons are removed from the reels and new symbols drop in to replace them. If more win lines are filled, then the process repeats. This continues until no more wins are triggered.

Cascading Wins are often used in conjunction with progressive win multipliers to make them more potent. In this case, Dr Toonz uses something called a Quantumeter, also a nod to the meters in Reactoonz, to make each successive cascade more significant. Your Quantumeter will start at a level of 0, 1 or 2. After each cascade the meter fills up by 1.

All you need to do is reach level 3 and its full. Then, when the cascade ends, a modifier is applied to the next spin.

Quantum Wilds – 2 to 6 wilds are added at random to the reels.

Metamorphosis – between 5 and 8 symbols are transformed into other symbols.

Disintegration – all low value one-eyed creature are removed and 2 wilds added.

 Free Spins

Whilst these enhancers can improve the odds in the paytable significantly, things improve still further with the free spins round. You’ll need to land between 3 and 6 scatters to unlock this bonus, with 10, 15, 20 or 25 spins available depending on how many scatters are in view.

During a free spins sequence, the Quantumeter will start at a level of 1 or 2 so your odds of unlocking one of those modifiers is improved.

Our Verdict 8.4/10

So, what do we make of Dr Toonz and his latest manic invention? Well, just like film franchises, it can be tricky to keep a slots series going whilst continuing to match the quality of the original. And for us, Dr Toonz isn’t quite as compelling as the Reacoontz games that preceded it. The features and gameplay are not so manic here, perhaps because the Quantumeter and its charges are more frantic and chaotic in the grid games. In this instance the action feels more linear, with a lot of base game spins reaping just one or two cascades with not enough charge to set up the modifiers, and consequently some frustrating sessions. However, when the meters do fill and if you are in a free spins round with 20 or more plays to go, that’s when things get a lot more interesting.

The big difference though is in the potential of Dr Toonz which is cranked right up to well over 20,000x, significantly more than the 5,000x that you find in Reactoonz 1 and 2.  That gives it enough fire power to compete with some of the more aggressive high volatility games out there and is reason enough for high risk fans to take this one for a spin. You can find out for yourself at new slot sites in the UK from September 2021.


Useful Resources

Play n Go Website

Slots Variance Guide