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74tests790,000spins open data closed rig 18+
TNT Tumble — Slotester Lab test cover
10,000 SPINS 50 BUYS DEMO SERVER REVIEW PENDING

Relax Gaming · tested 2026-09-19

TNT Tumble

TNT Tumble cleared its fifteen stone blocks 58 times in this review, once per 172 spins, and the demo returned 92.75% RTP against the 96.11% printed in its rules.

Test card

10,000 spins · FUN 2.00 bet · every request logged
Spins10,000
BetFUN 2.00
RTP declared96.11%
RTP measured92.75% (approximate 95% CI 79.3–106.2)
Hit frequency29% · every 3.51
Dead streak max / avg21 / 3.49
Median hit0.60x
Max win (base game)70.4x · spin 2865
Free spins, natural58 · every 172.4 spins · mean FS-only payout 48.0x stake
Balance start → end5,000 → 3,549
Balance in bets over the base series
Win distribution, x bet
test logs · 1 run · every request loggedtest record ↓
  1. 012026-09-1910,000 rounds · 50 buysfiles & checksums ↓92.75%RTP5 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 TNT Tumble demo

same math as real play · demo balance
TNT Tumble demo game field
Free demo · no registration · plays on the provider's official server · 18+ Responsible gambling

Bonus buy lab

50 buys × 70x · FUN 140 each
Results, x price (amber = below price)
  1. buy 012.69x
  2. buy 020.51x
  3. buy 031.14x
  4. buy 040.47x
  5. buy 050.03x
  6. buy 060.14x
  7. buy 072.88x
  8. buy 080.14x
  9. buy 090.87x
  10. buy 100.24x
  11. buy 110.44x
  12. buy 120.19x
  13. buy 131.62x
  14. buy 140.68x
  15. buy 150.61x
  16. buy 161.21x
  17. buy 170.38x
  18. buy 182.50x
  19. buy 190.46x
  20. buy 201.47x
  21. buy 210.30x
  22. buy 220.31x
  23. buy 232.21x
  24. buy 241.05x
  25. buy 250.26x
  26. buy 263.24x
  27. buy 270.09x
  28. buy 281.65x
  29. buy 290.25x
  30. buy 300.28x
  31. buy 313.24x
  32. buy 320.29x
  33. buy 330.23x
  34. buy 341.45x
  35. buy 350.11x
  36. buy 360.39x
  37. buy 370.24x
  38. buy 380.32x
  39. buy 390.28x
  40. buy 400.11x
  41. buy 410.15x
  42. buy 421.35x
  43. buy 431.27x
  44. buy 444.27x
  45. buy 450.02x
  46. buy 460.44x
  47. buy 470.47x
  48. buy 480.20x
  49. buy 490.23x
  50. buy 500.35x

mean 0.87x · median 0.41571429× price (FUN 58.20) · 34 of 50 below price · best 4.27x · worst 0.02x

Free spins anatomy
Spins per bonus (avg / min–max)7.3 / 6–12
Retriggered50%
Bonuses that paid nothing0%

The share counts bonuses that ran past their six starting spins. In the Multiplier mode no block carries extra spins, so every addition came from clearing a third full row of blocks, worth two spins each time.

Natural free spins on media spin 180 in the Multiplier mode: six spins, meter to x2, FUN 105.40 for the round · Recorded in a separate browser session, outside the statistical samples.
Buy ledger
Spent
FUN 7,00050 × FUN 140
Returned
FUN 6,120.2087.43% · approximate 95% CI 60–115%
Net
−FUN 879.80−6.3 buys
Break-even or better
16 / 5032%
Paid 2× price or more
7 / 5014%
Price in base spins
70natural trigger every ~172 spins

One ticket equals 70 ordinary stakes. Natural bonuses occurred once per 172 paid rounds in this sample. Stakes multiplied by this interval measure gross wagering, not the net cost of obtaining a bonus. Purchase returns above include the complete purchased round and are divided by the ticket price.

Risk profile

how much bankroll this run needed
1,094xmax drawdown, in bets (by spin 6964)
-1,094xlowest point vs start
21longest dead streak, spins
Bankroll survival in this run
50 betsbust at spin 80
100 betsbust at spin 173
200 betsbust at spin 515

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

15 rules screens from the game

TNT Tumble stacks five columns of seven positions inside a mine shaft. The top four rows carry gems, the bottom three start as dark stone blocks with up to three TNT sticks among them. Any horizontal or vertical line of three or more matching symbols pays, from 0.2x the stake for three nuggets to 50x for seven Wilds, and only the longest match of a symbol on a line counts.

Winning symbols vanish together with every block touching them, the symbols above tumble down, fresh ones land from the top, and the chain runs until nothing new pays. Wilds arrive in stacked segments and survive a win; they break only when they reach the bottom row inside one. A TNT block that goes off takes every other block on its row with it, and clearing all fifteen blocks within a single round opens six free spins. Over the logged series 8,849 blocks were destroyed, 487 of them by TNT, and the board was emptied 58 times.

Before the free spins start the game asks for a mode. Multiplier fills the special blocks with x1, x2 or x3 steps that add to one multiplier for the remainder of the feature; Extra Spins fills them with 1, 2, 3, 5 or 10 spins; Multiplier & Extra Spins mixes both. In every mode each third full row of blocks cleared adds two spins, and the blocks are not reset between spins: the grid slides down whenever a row goes so the bottom three rows always hold at least one. All 108 recorded bonuses were played in the Multiplier mode.

The Free Spins button sells the feature at 70 times the stake, FUN 140 at the FUN 2 stake, with the same 96.11% quoted for the purchase as for ordinary play. The game data lists a top prize of 12,279x the stake, stakes span FUN 0.10 to FUN 1,000, and there is no ante option; the demo build is 2.0.9, dated 14 September 2026 on its rules page.

Mechanics6 from the rules screens
  • Wild symbol
  • Cascading reels
  • Free spins
  • Multiplier
  • Retrigger
  • Bonus buy
Paytable
x total bet · bar = top payout on a log scale
symbol 34567
Wild 0.5x 1x 2.5x 6x 50x
Red gem 0.5x 1x 2.5x 6x 15x
Yellow gem 0.4x 0.8x 2x 5x 10x
Green gem 0.2x 0.5x 1.2x 3.5x 7x
Blue gem 0.2x 0.5x 1x 3x 6x
Copper nugget 0.2x 0.4x 0.7x 2.5x 5x
Silver nugget 0.2x 0.4x 0.7x 2x 4x

Bet range FUN 0.10 – 1000 per spin · payouts read from the game's paytable at bet FUN 2.00

Verdict

Multiplier or nothing

Against the 96.11% in its rules the series returned 92.75%, inside an approximate 95% band of 79.3 to 106.2%. The balance slid from FUN 5,000 to FUN 3,549, touched 1,094 stakes down on spin 6,964, and fifty stakes were gone after 80 spins. Hits came every 3.51 spins at a 0.6x median, 7,148 of 10,000 rounds paid nothing, and the longest drought was 21 spins, twice.

Big money never came from ordinary play. The largest round without free spins was 70.4x on round 2865 after nine cascades, while all twelve rounds above 100x were free-spin rounds. The feature opened 58 times, once per 172 spins with waits up to 655, and its spins alone returned 30.0% of everything paid, 48.0x the stake on average with a 32.7x median; round 3953 added 174.2x from ten spins to a 61.6x trigger round for 235.8x in all.

Purchases came back at 0.8743x of price on average over fifty tickets at FUN 140, 0.4157x in the middle, FUN 58.20, with 34 below price; that is 87.43% over the sample against the 96.11% quoted. Buy 44 ran twelve spins to FUN 598, 4.27x, and buy 45 six spins to FUN 2.40. Without the best ticket the other 49 returned 0.805x.

One meter decides the feature. Fifty-three of the 58 natural bonuses pushed the multiplier to x2 or higher and averaged 51.8x the stake; the five that never left x1 averaged 7.0x. The meter reached x10 once, on round 3953, and the 35 bonuses that ran past six spins earned every extra spin by clearing a third full row of blocks, because the Multiplier mode carries no spin blocks at all.

Measured upsides
  • Free spins opened 58 times, once per 172 spins, and 53 of them drove the multiplier to x2 or higher
  • Twelve rounds passed 100x, the best 235.8x on round 3953 with its ten free spins included
  • A hit landed every 3.51 spins and the longest drought of the series was 21 spins
  • Every cascade, destroyed block and multiplier step of all 108 bonuses is in the published log
Measured downsides
  • Three and a third points under the rules, 92.75% against 96.11%, with the balance closing 726 stakes down after a 1,094-stake low on spin 6,964
  • No ordinary round reached 100x in 10,000 spins; the base game topped out at 70.4x
  • Buying fifty times at FUN 140 returned 0.87x of price on average and 0.42x in the middle; 34 of the tickets lost
  • Five bonuses never left x1 and averaged 7.0x, and the feature waited up to 655 spins between triggers

Test record

10,000 rounds · 50 buys · open data · closed rig

One test run so far: a single session of the base game plus a separate series of bonus purchases on the official demo server, every request and response logged. 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 run2026-09-19
Measured return 92.75% 95% band 79.3–106.2% · declared 96.11%
  • 10,000rounds logged
  • 29%rounds that paid
  • 236xbiggest round
  • 1 / 172natural bonus rate
  • 0.87xmean of 50 buys
  • 21longest dry streak
return of this run with its 95% banddeclared 96.11%
Run 1 · 2026-09-1910,000 rounds
92.75%95% band 79.3–106.2%
75%85%95%105%declared 96.11%
dot = measured return · whisker = the range the long-run value is likely to sit in, given this many rounds
how the return settled, round by round10,000 rounds
92.74% after 10,000 roundsdeclared 96.11%
line = return measured up to that round · the line swings early and calms as rounds pile up
bonus purchases, run by run50 buys
Run 1 · 2026-09-19mean 0.87x · median 0.42x · 34/50 below price
bar = one purchase, what it returned as a multiple of its price · dashed line = the price · square-root scale
The run · tap to open
01run

Run 012026-09-19

10,000 rounds at FUN 2.00 · 50 buys · rig 0.6.0 · RTP profile 96.11%

measured return92.75%-3.4 pts vs declared
95% band79.3–106.2%
natural bonuses58 · 1 / 172
bonus buys, mean0.87x
95% band
79.3–106.2%
rounds that paid
29%
biggest round
236x · round 3,953
longest dry streak
21
natural bonuses
58 · one per 172 rounds
bonus buys
mean 0.87x · median 0.42x · 68% below price
balance start → end
5,000 → 3,549
deepest drawdown
1,094x
Download this run · the square button copies the file’s SHA-256, so you can confirm the download is unchanged

10000 ordinary paid rounds, including naturally triggered features, at a fixed FUN 2.0 bet; 50 bonus buys at 140.0 each (70.0x) on the official Relax Gaming demo server (jurisdiction MT, RTP profile 96.11%); every request and response logged; test run 2026-09-19.

The test rig recorded every round on the official demo server. Screenshots and video were captured in a separate browser session and are not part of the statistical samples. This release has completed automated data, content and page checks; human editorial review is pending. How we test →

CLOSED RIG OPEN DATA

FAQ

5 questions · answered from the log
TNT Tumble RTP: how far was the demo from 96.11%?
Lab answer

Playing FUN 2 a spin, the demo returned 92.75%, 3.36 points under the printed 96.11%, and the mean carries an approximate 95% uncertainty of 79.3 to 106.2%. Free spins alone delivered 30.0% of the payout from 58 features, and the balance closed FUN 1,451 below its start.

What empties the board, and how often did it happen?
Lab answer

The three bottom rows start as fifteen stone blocks; wins next to a block destroy it and a TNT block clears its whole row. When all fifteen go within one round, six free spins start. In 10,000 spins the board was emptied 58 times, once per 172 spins, with gaps between features of up to 655 spins.

Does the free spin mode matter, and which one was tested?
Lab answer

Every one of the 108 recorded bonuses used the Multiplier mode, where special blocks add x1 to x3 to a meter that stays for the whole feature. It mattered: the 53 natural bonuses that reached x2 or more averaged 51.8x the stake, the five that stayed at x1 averaged 7.0x, and the meter topped out at x10 on round 3953.

Are the 70x free spins worth the price?
Lab answer

Over 50 tickets at FUN 140 the return was 0.8743x of price on average and 0.4157x in the middle, FUN 58.20; 34 finished below price, seven doubled it or better, and the best, buy 44, paid 4.27x with twelve spins. The sample works out to 87.43% against the 96.11% the rules quote for the purchase.

Can the base game pay on its own?
Lab answer

Rarely far: 28.52% of spins paid something, the median hit was 0.6x, and the biggest round without free spins was 70.4x on round 2865 after nine cascades. All twelve rounds above 100x came with free spins, and 7,148 of the 10,000 rounds paid nothing.

Field notes

0 notes
Slotester Labmeasured run · every request logged measured
  • spins10,000
  • bet2.00
  • result-726x
  • RTP measured92.8%
  • bonuses58
  • max win70.4x

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