Real screenshot from our demo test, 28 Oct 2026
PopiplayReleased 21 Oct 2026
Mad Labs Demo & review
A 5x6, 50-line slot where Mystery symbols can open Golden Reveal coin respins, and free spins climb Levels that remove low symbols and raise the coin multiplier.
Written by Hampus GravePublished 28 Oct 2026
Play money · no sign-up · no deposit
- RTP
- 97.12%
- Volatility
- High
- Max win
- 30,000x
- Grid
- 5x6
Play Mad Labs for real at YEET
FluxPlays verdict
Our verdict
Not for the base game, but yes for the free spins. Each Level the round climbs removes a low symbol and lifts the Golden Reveal multiplier toward 10x, so a good round gets better as it goes. The drawback is the way in: the round needs a Gamble Scatter beside two Scatters, which came once in our session, or a buy.
Who it suits
Play this if…
- You are a bonus chaser: free spins improve with every level, and a Gold reveal starts at the top
- Gamblers at heart: the collect-or-risk screen lets you trade spins for a higher starting Level
- Bonus buyers who want choice: four cards from Level 0 to Level 4, plus a random one
Skip this if…
- Short-session players: base spins pay little, and the bonus needs the Gamble Scatter as a third Scatter
- You want to know what a coin is worth: the rules list Golden Reveal values without the conversion
- Players who want steady returns between features: the line game here is mostly filler
Where to play Mad Labs
Mad Labs is available at these casinos we have tested and reviewed. How we test casinos
YEET
18+ · T&Cs apply
SafeCasino
FluxPlays score 7.5
Skrill withdrawal paid out in 18 hours in our test
400% up to €4,000 + 1,200 free spins
- 40x wagering
- min deposit €10
- 30 days
400% welcome package up to 4,000 over four deposits, each 100% up to 1,000 plus 300 free spins. 40x wagering on bonus and free spin winnings. Minimum 10 to activate, 200 for the full 300 spins. 30 day validity. Free spins run on Pragmatic Play games.
18+ · T&Cs apply · Offer checked 7 Oct 2026
Betlabel
FluxPlays score 7.0
E-wallet payout inside 24 hours in our test
200% up to €1,500 + 150 free spins
- 35x wagering
- min deposit €10
- 7 days
200% welcome package up to 1,500 plus 150 free spins over four deposits: 100% up to 300 + 30 FS, 50% up to 350 + 35 FS, 25% up to 400 + 40 FS, 25% up to 450 + 45 FS. 35x wagering, 7 day window. Minimum 10 first deposit, 15 thereafter. Crypto deposits are not bonus eligible.
18+ · T&Cs apply · Offer checked 7 Oct 2026
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Mad Labs: Full Review
If you like slots where the free spins get better the longer they last, Mad Labs is built around that: every level its free spins climb strips out low symbols and raises the multiplier on its Golden Reveal coin rounds. Popiplay's 5x6, 50-line laboratory game adds a gamble on the free-spins award, and the coin rounds are where its top prizes sit. It suits bonus chasers and buyers. The base game mostly waits for one particular Scatter.
Mad Labs game information
- Provider
- Popiplay
- Release date
- 21 October 2026
- Grid
- 5 x 6 (reels x rows)
- How it pays
- 50 paylines
- RTP
- 97.12%
- Volatility
- High
- Max win
- 30,000x the bet
- Buys and modes
- 4 buys, see the table
How Mad Labs works
Fifty fixed lines pay matching symbols from the left, and only the highest win on each line counts. Everything that matters comes from three special symbols, and they feed each other in this order:
- Mystery Reveal symbols land anywhere, in the base game and free spins, and all turn into the same symbol: a paying one, a Wild or a Golden Reveal.
- A Golden Reveal starts a respin round of Coins, Collectors and Multipliers.
- Two Scatters on reels 2 to 4 can bring a Gamble Scatter as the third, which reveals a blank or a free-spins award at Level 0, 2 or 4.
- Inside free spins, Scatters and Bonus Spins symbols push the Level up, which removes low symbols and lifts the Golden Reveal multiplier.
Golden Reveal inside high-level free spins carries the game. The base game's job is to deliver the Gamble Scatter, and our natural round showed what happens after: the level climbed from 0 to 3 and three late Golden Reveal rounds paid most of it.
The Wild stands in for paying symbols but not for the Mystery Reveal, either Scatter or the Golden Reveal symbols.
How the Golden Reveal works
When a Mystery Reveal turns into Golden Reveal, the game switches to a respin round. Coins, Collectors and Multipliers can land, plus Scatters, which inside free spins become Bonus Spins symbols worth one to three extra spins.
| Symbol | What it does |
|---|---|
| Bronze Coin | Value 1, 2 or 5 |
| Silver Coin | Value 10, 25 or 50 |
| Dark golden Coin | Value 100, 250 or 500 |
| Bright golden Coin | Value 1,000, 2,500 or 5,000 |
| Collector | Collects every Coin and Collector value on the grid |
| Multiplier | 2x, 3x, 5x or 10x on all Coins and Collectors |
The rules list these values but do not say how they convert into the cash win, so we go by the server's totals: our biggest Golden Reveal round had a 5,000 Coin and a Collector on screen and paid $108.
A Golden Reveal round inside our natural free spins at Level 2: Coins up to 5000, a Collector magnet and 3x and 5x Multipliers. FluxPlays demo test, 28 October 2026.
Free spins: how the Gamble Scatter and Levels work
Free spins come only from the Gamble Scatter or a buy. It appears only when two ordinary Scatters are already on the grid, and at most three of the two kinds land in one spin. When it reveals an award, the colour sets the start:
| Gamble Scatter | Free spins | Starting Level |
|---|---|---|
| Purple | 4 to 9 | Level 0 |
| Red | 7 to 9 | Level 2 |
| Gold | 8 to 10 | Level 4 |
Before the round starts you can collect the award or risk it for a higher Level, and losing the gamble loses the spins. We collected every time.
| Level | Low symbols removed | Golden Reveal multiplier | To reach it |
|---|---|---|---|
| 0 | None | 1x | Start |
| 1 | L4 | 2x | 4 Scatters, +4 spins |
| 2 | L4, L3 | 3x | 4 more, +3 spins |
| 3 | L4, L3, L2 | 5x | 4 more, +3 spins |
| 4 | All four | 10x | 4 more, +2 spins |
So each level does two things at once: fewer low symbols means more premium line wins, and a bigger multiplier on any Golden Reveal round. A round that starts at Level 4 skips the climb entirely.
The gamble offer after base spin 62: 7 free spins at Level 0, to collect or risk for a higher Level. We collected. FluxPlays demo test, 28 October 2026.
Bonus buy: prices and what you get
Four cards sit in the Bonus Buy panel, each buying one free-spins round. A bought Low or Mid round still gets the collect-or-risk offer, and the High card starts at Level 4 with no gamble.
Buys and paid modes
Prices at a $1 bet, with our test result
Free Spins Low Level
$100
Bonus buy
7, 8 or 9 free spins from Level 0
Our testOne round: $32.20 back ($100 in)
Free Spins Mid Level
$190
Bonus buy
7, 8 or 9 free spins from Level 2
Our testOne round: $261.20 back ($190 in)
Mystery Free Spins
$300
Bonus buy
One of the other three cards at random
Our testOne round: $448.80 back ($300 in)
Free Spins High Level
$610
Bonus buy
8, 9 or 10 free spins at Level 4, no gamble
Our testOne round: $60 back ($610 in)
| Option | Price at $1 | What you get | Our test |
|---|---|---|---|
| Free Spins Low LevelBonus buy | $100 | 7, 8 or 9 free spins from Level 0 | One round: $32.20 back$100 in |
| Free Spins Mid LevelBonus buy | $190 | 7, 8 or 9 free spins from Level 2 | One round: $261.20 back$190 in |
| Mystery Free SpinsBonus buy | $300 | One of the other three cards at random | One round: $448.80 back$300 in |
| Free Spins High LevelBonus buy | $610 | 8, 9 or 10 free spins at Level 4, no gamble | One round: $60 back$610 in |
The Mystery card costs 300x, which is the average of the other three prices, but the rules do not give the odds of each outcome. The panel shows a volatility meter on every card and no RTP per buy, so the table leaves those cells empty.
The Bonus Buy panel at a 1.00 bet: Low Level 100.00, Mid Level 190.00, High Level 610.00 and Mystery 300.00. FluxPlays demo test, 28 October 2026.
RTP, volatility and max win
The rules give one RTP, 97.12%, and Popiplay's page shows the same figure and calls the game High volatility. The rules have no label of their own. The top prize is 30,000x the bet, and the Level 4 multiplier on a Golden Reveal round is the realistic route toward it.
Our Mad Labs demo test
FluxPlays demo test
28 October 2026, demo running 97.12% RTP
Base game spins
100
at $1 per spin
Staked
$100
Paid back
$377
377% of stake, +$277
Winning spins
20 of 100
20% of spins paid something
Biggest win
$354.70 (354.7x)
natural free spins from the Gamble Scatter, 7 spins collected, climbed to Level 3 over 17 spins; the other 99 spins returned $22.30
Free spins triggered
1
natural trigger in the session
Played on Popiplay's public fun-mode demo (rules version 1.0 of 15 October 2026) on 28 October 2026, in FUN credits read as dollars, from a 1,000 balance. The demo opened at 0.10 and the bet was set to 1.00 for every round; buys are priced from that base. Four warm-up spins came before the log started, so the counted session starts at 998.40. Every free-spins award was collected, never risked. Spins were started by a script clicking the spin button at Basic speed. Every round was checked against the game's own server replies, and the session ends at 877.60 on screen: 1,300.00 spent over 104 paid rounds, 1,179.20 returned. A session this size cannot measure the RTP or the volatility.
One natural round made the base game. On spin 62 the Gamble Scatter joined two Scatters and revealed seven spins, and the level then climbed to 3 over 17 spins. Three Golden Reveal rounds near the end did most of the work, the last of them worth $100. Without that round, the 99 other spins returned $22.30.
The buys showed how much one round can swing. The Mid card's best spin paid $197.70, the High card returned the least of all four, and the Mystery card drew the same High round and paid $282.50 on its very first spin.
The Gamble Scatter landed three times and revealed blanks twice. One session is far too short to say anything about the game's RTP. We never took the risk option, so how often it pays off is described from the rules alone.
Our Mystery buy drew the High Level: Level 4, low symbols removed, after a first spin that paid 282.50. FluxPlays demo test, 28 October 2026.
Is Mad Labs worth playing?
Yes, if you are willing to wait for the Gamble Scatter or buy past it. Free spins are where the design pays off, because every level stacks two advantages, and the Golden Reveal coin round gives the game its top end.
Le Zeus also turns Mystery symbols into premiums, Wilds or coin reels, on a 6x5, 19-line grid. Pick Le Zeus for Medium volatility and a 20,000x cap. Pick Mad Labs if you want the higher RTP, free spins you can gamble upward and a round that improves as it goes.
In the demo, buy the Low Level card once and watch the level meter on the right: it shows how many Scatters each step needs and what it removes.
End of our natural free spins from base spin 62, which climbed to Level 3: TOTAL WIN 354.70. FluxPlays demo test, 28 October 2026.Frequently Asked Questions
How do you trigger free spins in Mad Labs?+
You need two Scatters on reels 2 to 4 and a Gamble Scatter as the third symbol. The Gamble Scatter reveals either a blank or a purple, red or gold award, which sets the starting Level. In our session it landed three times and paid out once. All starting Levels can also be bought.
Should you collect or risk the free spins in Mad Labs?+
That depends on how much you value the higher Level against losing the spins outright. Risking can lift the award to a higher Level, where fewer low symbols land and Golden Reveal rounds carry a bigger multiplier. The rules do not publish the odds of the gamble, and we collected every award in our test.
Can you buy the bonus in Mad Labs, and what does it cost?+
Yes. Low Level free spins cost 100x the bet, Mid Level 190x and High Level 610x, which starts at Level 4. Mystery Free Spins, at 300x, gives one of the three at random. No separate RTP is stated for the buys.
What is the max win in Mad Labs?+
The max win is 30,000x the bet. The route there runs through free spins at a high Level, where low symbols are gone and a Golden Reveal round's Coins, Collectors and Multipliers are multiplied by up to 10x.
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