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Rise of Merlin — Slotester Lab test cover
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Play'n GO · 2019 · tested 2026-10-15

Rise of Merlin

Aces made the best expanding symbol in the Rise of Merlin demo: the 11 free spins rounds that drew the A averaged 96.6x the stake, nearly four times the Red Dragon's 24.8x.

Test card

10,000 spins · DEMO 2.00 bet · every request logged
Spins10,000
BetDEMO 2.00
RTP declared96.58%
RTP measured103.94% (approximate 95% CI 81.0–126.8)
Hit frequency32% · every 3.14
Dead streak max / avg18 / 3.13
Median hit0.50x
Max win (no bonus round)172.0x · round 5546
Free spins, natural62 · 6.2 bHz · every 161.3 spins · mean FS-only payout 72.9x stake
Balance start → end25,000 → 25,788
Balance in bets over the base series
Win distribution, x bet
test logs · 1 run · every request loggedtest record ↓
  1. 012026-10-1510,000 rounds · 0 buysfiles & checksums ↓103.94%RTP4 files · SHA-256 ↓

each run keeps its own spin log, CSV and raw server journal with checksums; the figures on this card combine all runs

Play Rise of Merlin demo

PLAY'N GO · official demo · same math as real play
Best offer for players from United States Rise of Merlin available at Cafe Casino
Play for real money
Rise of Merlin demo game field
Exclusive bonus at Cafe Casino · for players from the United States 300% up to $2,000 + 150 FS
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Free demo · no registration · plays on the provider's official server · 18+ Responsible gambling

Free spins on video

natural trigger · 62 in 10,000 spins
REC · NATURAL TRIGGER

Drawing the owl as its expanding symbol at DEMO 2.00, this free spins round retriggers twice to 24 spins and ends on a Super Big Win of 10,775 coins. Recorded in a separate browser session, outside the statistical samples.

Across the whole run the 62 natural bonuses split into 21 under 20x, 19 between 20x and 50x, 11 between 50x and 100x and 11 at 100x or more, and together they made up 43% of everything the game returned. The wait between two triggers ran from 4 to 768 spins. Payout figures here are FS-only, in ordinary stakes; the trigger payout is excluded.

Three Crystal Balls during the bonus retrigger it with more spins and one more expanding symbol. Thirteen of the 62 natural bonuses went past their opening eight spins, the bonuses averaged 11.0 spins, and the longest, round 7218, reached 40 spins with five expanding symbols.

  • triggers 62 1 per 161 spins
  • every 161 spins gaps 4 to 768
  • mean 72.9x FS-only median 35.8x stake
  • best 631.5x round 3964
  • spins per bonus 11.0 8 to 40 observed
Trigger mapevery natural bonus of the run · height = result, log scale · amber = top 4
Best bonuses
  1. 01round 396424 spins631.5x
  2. 02round 721840 spins459.0x
  3. 03round 577532 spins416.5x
  4. 04round 25424 spins305.5x

Risk profile

how much bankroll this run needed
1,029xmax drawdown, in bets (by spin 3660)
-685xlowest point vs start
18longest dead streak, spins
Bankroll survival in this run
50 betsbust at spin 78
100 betsbust at spin 165
200 betsbust at spin 1523

One run, one bet size. A different session can bust earlier or never; treat this as a measured example, not a rule.

How it plays

3 rules screens from the game
RULES · FROM THE GAME
Rise of Merlin rules, page 1
Rise of Merlin rules, page 2
Rise of Merlin rules, page 3
screen 01 / 03 Rise of Merlin rules, page 1

Rise of Merlin has ten lines on five reels of three rows, and the test played DEMO 2.00 a spin as five coins of 0.04 per line. Merlin pays 500 times the total bet for five, the Red Dragon 160, the owl and the white dragon 60, A and K 12, and Q, J and 10 eight.

The Crystal Ball is the Wild and the Scatter at once. It substitutes for every symbol on a line, returns double the total bet for three anywhere, twenty times for four and two hundred for five, and three or more start the free spins.

Every bonus in this test opened with eight free spins and one special expanding symbol drawn at random, which can spread over the reels it lands on to pay more. A retrigger adds spins and another expanding symbol, up to nine, and the rules list 96.58% with a cap of 250,000 coins, 5,000 times the stake.

Mechanics5 from the rules screens
  • Wild symbol
  • Scatter symbol
  • Free spins
  • Expanding symbol
  • Retrigger
Paytable
x total bet · bar = top payout on a log scale
symbol 2345
10 — 0.5x 2x 8x
J — 0.5x 2x 8x
Q — 0.5x 2x 8x
K — 0.5x 3x 12x
A — 0.5x 3x 12x
Owl 0.5x 2x 8x 60x
White Dragon 0.5x 2x 8x 60x
Red Dragon 0.5x 3x 30x 160x
Merlin 1x 10x 100x 500x
Crystal Ball — 2x 20x 200x
Crystal Ball as Wild (line pays) 1x 10x 100x 500x

Bet range DEMO 0.01 – 100 per spin · payouts read from the game's paytable at bet DEMO 2.00

Verdict

The ace beat the dragons

Drawn as the expanding symbol, the A paid more than any other: eleven bonuses at 96.6x the stake on average, 23.5% of all bonus money. The nine that drew Merlin averaged 90.6x, the five that drew the Red Dragon only 24.8x. Round 3964 started with the A, retriggered twice to add a Red Dragon and a J, ran 24 spins and paid 633.5x, the best round of the test.

Retriggers decided how far a bonus could go. Thirteen of the 62 ran past their opening eight spins; the 50 that kept one expanding symbol averaged 34.5x, the five that collected three averaged 297.0x, and round 7218 reached five symbols and 40 spins for 459.0x.

In the base game the Crystal Ball mattered more than any paying symbol. It stood in as Wild on 1,947 of 4,409 paying base lines, worth 61.4% of base line money, and round 5546, the top round without free spins, paid 172x through five Red Dragons with its help.

Measured upsides
  • Drawing the A as expanding symbol meant 96.6x on average over 11 bonuses
  • Two retriggers in round 3964 added a Red Dragon and a J for 633.5x
  • Five bonuses with three expanding symbols averaged 297.0x
Measured downsides
  • A single expanding symbol was all that 50 of 62 bonuses got, at 34.5x on average
  • Bonuses that drew the Red Dragon averaged only 24.8x
  • No bonus collected more than five of the nine possible expanding symbols

Test record

10,000 rounds · 0 buys · open data · closed rig

One test run so far: a single session of the base game on the official demo server, every request and response logged; the game offers no bonus purchase, so every feature in the sample came from ordinary spins. When the game is tested again, the new run is added here and the figures on this page combine all runs into one sample.

result of this run2026-10-15
Measured return 103.94% 95% band 81.0–126.8% · declared 96.58%
  • 10,000rounds logged
  • 32%rounds that paid
  • 634xbiggest round
  • 1 / 161natural bonus rate
  • 18longest dry streak
return of this run with its 95% banddeclared 96.58%
Run 1 · 2026-10-1510,000 rounds
103.94%95% band 81.0–126.8%
75%85%95%105%115%125%declared 96.58%
dot = measured return · whisker = approximate 95% band for that mean, given this many rounds
how the return settled, round by round10,000 rounds
103.94% after 10,000 roundsdeclared 96.58%
line = return measured up to that round · the line swings early and calms as rounds pile up
The run · tap to open
01run Run 012026-10-15 10,000 rounds at DEMO 2.00 · 0 buys · rig 0.9.5 · RTP profile 96.58% measured return103.94%+7.4 pts vs declared 95% band81.0–126.8% natural bonuses62 · 1 / 161 biggest round634x
95% band
81.0–126.8%
rounds that paid
32%
biggest round
634x · round 3,964
longest dry streak
18
natural bonuses
62 · one per 161 rounds
balance start → end
25,000 → 25,788
deepest drawdown
1,029x
Download this run · the square button copies the file’s SHA-256, so you can confirm the download is unchanged

10,000 ordinary rounds, including naturally triggered features, at a fixed DEMO 2 bet; recorded on the official Play'n GO demo server (jurisdiction ZZ, RTP profile 96.58%); every request and response logged; test run 2026-10-15.

The test rig plays the official demo build over the network and records every server round: bet, win, intermediate steps (cascades, respins), free spins, collect. Screenshots and video were captured in a separate browser session and are not part of the statistical samples. The text was read against the log by an editor before publication. How we test →

CLOSED RIG OPEN DATA

FAQ

8 questions · answered from the log
Which expanding symbol paid best in Rise of Merlin?
Lab answer

In this test the A: the 11 bonuses that drew it averaged 96.6x the stake and produced 23.5% of all bonus money. Merlin came close at 90.6x over nine bonuses, while the Red Dragon averaged 24.8x over five.

With how many free spins does a Rise of Merlin bonus open?
Lab answer

Every natural bonus here opened with eight, and a retrigger adds more together with a new expanding symbol. The 62 bonuses averaged 11.0 spins, and the longest ran 40.

How many expanding symbols can a single bonus collect?
Lab answer

Up to nine, according to the rules. The most seen in 10,000 rounds was five, in round 7218, which ran 40 spins and paid 459.0x.

Besides starting free spins, how does the Crystal Ball pay?
Lab answer

Anywhere for three or more as a Scatter, and on every line it completes as a Wild. As Wild it featured in 1,947 of 4,409 paying base lines, 61.4% of base line money.

Can the Rise of Merlin bonus be bought?
Lab answer

No purchase exists here, so all 62 bonuses in the test came from three or more Crystal Balls, about once per 161.29 rounds.

Was the Rise of Merlin demo above its listed 96.58%?
Lab answer

Yes. The demo returned 103.94% over 10,000 rounds at DEMO 2.00 against the 96.58% listed, and an approximate 95% interval of 81.04% to 126.84% surrounds the result. Round 3964 alone moved it a lot: without it the rest came to 97.61%.

Between two bonuses, how long did the longest drought last?
Lab answer

It lasted 767 rounds and ended at round 2496. On average the feature arrived every 161.29 rounds, so a gap that long is nearly five times the norm.

What ceiling do the rules put on a Rise of Merlin round?
Lab answer

The rules stop a round at 250,000 coins; with five coins on ten lines that equals 5,000 times the stake. The best round in this test, 3964, reached 633.5x.

Field notes

0 notes
Slotester Labmeasured run · every request logged measured
  • spins10,000
  • bet2.00
  • result+394x
  • RTP measured103.9%
  • bonuses62
  • max win, no bonus172.0x

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