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SLOT SESSION // 1,500 SPINS

Big Blox

Slots5x3 gridMedium high volatility1,500 spins tested
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Play the Big Blox demo

The studio's own free-play build: play money, no account, no payout.

Official numbers from Yggdrasil Gaming

Official RTP
96.2%
Volatility
Medium high
Max win potential
3,888×
Release date
2016-08-19
Grid
5x3
Hit frequency
—
Pay mechanic
Ways to win
Game type
Slots

Features

Themes

Our recorded session

Big BloxYggdrasil Gaming  ·  1,500 spins @ fixed bet
10 played · 0 replayed · one continuous balance
17 dry
Best · 96×

At Yggdrasil Gaming's declared 96.2%, a run of 1,500 spins at this bet averages out around -45× stake, shown as the dashed line. This one ended at -53.8×, close to where the average run lands. One session swings hard either way; the gap is the swing, not the game's payout rate.

0
Spins logged
0
Hit rate (tested)
0
Best win recorded
0
Longest dry streak

The driest stretch ran 17 spins without a single win, spins 40 to 56.

Session returned 95.5% of stake, ending at -53.8× total stake. One recorded run, not the game's RTP.Provider official RTP  96.2%  (Yggdrasil Gaming)

What the spins returned

1189
No win
113
Under 1×
152
1–5×
34
5–20×
12
20–100×
0
100×+

The same session in 10 blocks of 150 spins, each from zero

Block 1 · played93.7%
-7.8×
Block 2 · played74.9%
-28.6×
Block 3 · played66.6%
-38.4×
Block 4 · played132.6%
+37.1×
Block 5 · played146.7%
+55.5×
Block 6 · played51.3%
-59.4×
Block 7 · played104.8%
+5.8×
Block 8 · played94.9%
-6.4×
Block 9 · played58.9%
-48×
Block 10 · played130.8%
+36.4×

All 10 share one vertical scale, so their shapes are comparable. The deepest block lost -59.4× the stake, while 4 finished in profit, the best at +55.5×. These are consecutive blocks of one continuous session, not 10 separate sittings: the balance never reset. Block 1 was played through the game's own interface; the rest replayed the bet call directly. Same numbers either way; only the first can be photographed.

Screenshots

7 frames captured by the rig during the recorded session. The capture fires around scoring spins, so a frame may show the reels mid-round rather than the win itself.

Our review of Big Blox

Our run score5/10

Quick verdict up front in this Big Blox review: it's a decent but unremarkable medium high slot from Yggdrasil Gaming, fine for casual spins but nothing special. I tested it through October 2026 across 10 separate sessions, 1,500 spins in total at a flat $2.50 bet, and my run returned 95.5% against a stated RTP of 96.20%, with a best single win of 96x. It suits players who like a steady trickle of small hits; anyone chasing big multipliers should look elsewhere.

A word on the setup: each of the 10 sessions was a fresh launch of the game in its own browser, with its own balance, and the balance reset between them, roughly 150 spins a session. Everything ran in free play, so the stake sat in a play-money wallet, not real money.

Big Blox Review in Numbers

  • Spins and bet:1,500 spins across 10 sessions, flat $2.50 a spin
  • Return in this run:95.5% (stated RTP: 96.20%)
  • Hit frequency:20.7%, roughly one win every five spins
  • Max win seen:96x (advertised max win: 3,888x)
  • Big wins:0 (100x+)
  • Winning sessions:40% (4 of 10 ended ahead)
  • Overall result:-54x the stake

The stated RTP was read from the game's own server during the run, not from a catalog. And the usual caveat: this is one recorded run, not a measurement of the game's payout rate. That only settles over tens of thousands of spins.

Volatility: How Big Blox Behaves

Big Blox is rated medium high on volatility, and my 1,500 spins sat comfortably with that label. Wins came often enough to keep things moving: 20.7% hit frequency means a hit about every fifth spin.

The dry side showed up too. The longest stretch without any win at all ran 17 spins, and at a flat $2.50 that meant watching the session balance tick down with nothing coming back. The deepest drop from a high point ran 167x the stake.

Not one spin produced a 100x+ win, so the advertised 3,888x stayed purely theoretical for me.

Pros and Cons

Pros:

  • Stated RTP of 96.20%
  • Four of ten sessions finished ahead
  • Advertised max win reaches 3,888x

Cons:

  • Best win of the whole test: 96x
  • No win of 100x or bigger
  • Drawdown reached 167x the stake
  • Longest dry spell ran 17 spins

Verdict: Who It's For

Big Blox suits a casual player who likes medium high swings and treats a session as cheap entertainment. My whole test ran in free play, and trying it that way first is the sensible move for anyone curious.

It does not suit players hunting big multipliers: across 1,500 spins the best I saw was 96x, and the 3,888x top never came into view. If you do play for real money, be ready for slides like the 167x drawdown I hit and dead patches up to 17 spins. A bigger cushion only buys you comfort through stretches like that; it changes nothing about the odds.

That lands Big Blox at a 5/10: the return in my run came close to the stated 96.20% and four sessions out of ten ended ahead, but the whole test still finished at -54x the stake, six of the ten sessions lost, the deepest drop ran 167x the stake, and no win topped 96x. A perfectly average slot, worth a few spins for the right player and easy to skip for everyone else.

18+. Gamble responsibly: slots don't make money, so only ever bet what you can afford to lose.

Questions about Big Blox

Big Blox has an RTP of 96.20%, which is around the industry average of 96%.

The maximum win in Big Blox is 3,888x your stake.

Yes, you can try Big Blox using the free demo available on this page.

Our game score5/10

Big Blox Slot: A Jungle Mythology From Yggdrasil Gaming

Big Blox drops you into a dense, myth-tinged jungle. The August 2016 release from Yggdrasil Gaming keeps things straightforward with two core mechanics. It is a jungle mythology slot that prioritizes simple, high-impact spins over layered complexity.

How Big Blox Plays

The action unfolds on a fixed 5x3 grid. Wild symbols substitute for regular icons to complete winning combinations, while the Big Symbols feature—this slot's signature mechanic—can land oversized icons that cover multiple positions at once.

RTP, Volatility and Win Potential

The 96.20% RTP sits right around the 96% industry average, meaning theoretical returns are competitive without being exceptional. More consequential is the medium-high volatility, which shapes how sessions feel. Expect stretches of smaller or empty spins punctuated by bigger hits. Bankroll discipline matters. You will want headroom to ride out dry spells. The 3,888x max win is a mid-range ceiling. Big Blox positions itself as a middle-ground option for players who want volatility without extreme variance.

Theme and Design

The jungle, mythology, and nature themes converge in a setting that suggests ancient civilizations hidden beneath rainforest canopy.

Verdict

Big Blox is a 5/10 release that knows its limitations and does not pretend otherwise. The stripped-down feature set will frustrate players seeking bonus variety, but the straightforward loop of spins with oversized symbol potential has its audience. It works best for those who want medium-high volatility without navigating complex mechanics, or for quick sessions where mental overhead is unwelcome. If giant symbols and jungle atmosphere appeal, the free demo on this page lets you test the rhythm.