Case Study

Le Digger Bonus Gamble: Equal Slot Tiles, One at 28.775%

In short: Le Digger's Bonus Gamble is a pick between equal-looking tiles that the game server weights unequally: on the Tomb Service board the upgrade to Dig It comes up 28.775% of the time, not the 25% four tiles suggest.

Four tiles of the same size, one TNT plunger, no numbers on screen. The game server holds the odds, and they are not even: we read every weight it sends, then took the Gamble twice on a €2.00 bet.

Le Digger Tomb Service Gamble board with four equal tiles
Four tiles of the same size and no odds on screen, as the studio's demo showed it on . Source: our own screenshot.
28.775%
Tomb Service upgrade, where the tiles suggest 25%
22.6%
bronze, the least likely tile on that board
3.6%
Tomb Service to Gold Digger in two gambles
96.28%
RTP of a base-game bonus gambled once
€80.00
what our two gambles paid on €660.00 of buys

Press Gamble after a Tomb Service trigger and the game hands you four stone tiles of the same size under a TNT plunger. The game server, which settles the draw, does not treat those tiles as equal. We read the weights it sends and set them next to the rules and the screen. Then, on , we pressed the plunger ourselves. Twice.

What the Bonus Gamble Screen Shows

The Bonus Gamble screen shows equal tiles and no odds: no number, no percentage, no hint that one tile counts for more than another.

Tomb Service offer: ten free spins or a Gamble
Before the first spin the bonus asks for a choice, Continue or Gamble (studio demo, ). Source: our own screenshot.

Three FS scatters open Tomb Service and four open Dig It, and both bonuses start with the same question. Continue with ten free spins, or Gamble? The rules are as quiet as the board. They say the Tomb Service Gamble awards "1 of 4 outcomes" and the Dig It Gamble "1 of 8 outcomes". Each prize is then listed as "One outcome", "Two outcomes" or "Four outcomes".

Read that way, anyone would put each Tomb Service tile at 25%.

Nothing in the client corrects that reading, and Smokey, the raccoon with the dynamite, offers no hints either, which is about what you'd expect from a professional tomb raider.

Where the Gamble Weights Come From

The weights come from the game server, not from the rules screen. When the demo loads, the client fetches a game-info file. Inside it, each board appears as a weighted wheel: "gamble" for Tomb Service, "gamble_2" for Dig It.

We read that file for model 96, the only build the public demo serves. The board weights came back identical under every regulatory setting the server accepted.

One gap stays open. The file gives the weight of each tier but not how a value is picked inside it. Whether a silver prize lands on 5x as often as on 10x, we can't tell you.

Tomb Service Gamble: Weights Out of 4,000

On the Tomb Service board the upgrade tile carries the most weight: 1,151 out of 4,000, or 28.775%.

OutcomeTiles on screenServer weightServer chanceEqual-tile reading
Upgrade to Dig It (FS tile)11,15128.775%25%
Bronze coin, 1x to 4x190422.6%25%
Silver coin, 5x to 10x192523.125%25%
Gold coin, 20x to 50x11,02025.5%25%

Figures as recorded on ; the studio can change its game, rules or server answers without notice.

The gap runs in both directions. The upgrade sits 3.775 points above an even split and bronze 2.4 points below it. Silver and gold stay close to a quarter, at 23.125% and 25.5%, which is near enough that nobody would notice the difference over an evening.

The rules list the cash values exactly: bronze pays 1x, 2x, 3x or 4x the bet, silver anything from 5x to 10x, and gold 20x, 30x, 40x or 50x. A Tomb Service bought for 80x therefore gets less than its price back from every cash tile, the best gold prize included. Only the upgrade keeps the bonus going.

Dig It Gamble: Weights Out of 800

Out of 800 weight points, the Dig It server gives 100 to the upgrade, 220 to silver, 380 to gold and 100 to the diamond. That board comes closer to what it looks like, though the match isn't exact.

Dig It Gamble board: diamond, four gold, two silver, FS
The Dig It board shows eight tiles of one size: one diamond, four gold, two silver and one FS upgrade (studio demo, ). Source: our own screenshot.
OutcomeTiles on screenServer weightServer chanceEqual-tile reading
Upgrade to Gold Digger (FS tile)110012.5%12.5%
Silver coin, 5x to 10x222027.5%25%
Gold coin, 20x to 50x438047.5%50%
Diamond coin, 100x to 500x110012.5%12.5%

Tile by tile, each silver tile is worth 13.75% and each gold tile 11.875%, against 12.5% for an even eighth. The two silver tiles together beat their share by 2.5 points; the four gold tiles fall 2.5 points short of theirs. The diamond, which the rules value at 100x, 150x, 250x or 500x, and the upgrade each get exactly one eighth.

Bought at 250x, a Dig It Gamble pays back its price in cash only through the diamond tile, and only at its two top values.

The 3.6% Road to Gold Digger

Reaching Gold Digger from Tomb Service by gambling takes two upgrades in a row, and the server's weights put that at 3.6%.

The sum is 28.775% for the first upgrade times 12.5% for the second, which comes to 3.596875%, or roughly one try in 28. Equal tiles would give 25% times 12.5%, so 3.125%. The real road is a little wider than the screen suggests. Still narrow.

The only other door is 5 FS scatters landing together during ordinary play. The buy menu sells Tomb Service and Dig It, but Gold Digger isn't on it.

What a Gamble Does to the RTP

A gamble hardly moves the return, and the client prints the proof itself. Every way into a bonus carries two or three RTP figures, one per gambling choice.

Way into the bonusNever gamblingGambling onceGambling twice
Bonus won in the base game96.26%96.28%96.27%
BonusHunt FeatureSpins96.25%96.24%96.21%
Tomb Service bought96.30%96.32%96.22%
Dig It bought96.33%96.23%no second gamble

This is the line that settles it. The Gamble is a variance switch, not an edge. It swaps the free spins, ten to start, for one quick draw, and a run of small wins for a single prize or an upgrade. For a bonus won in the base game, the return moves by 0.02 points at most. On a bought Tomb Service, gambling twice returns 96.22%, 0.08 points below never gambling; on a bought Dig It, one gamble costs 0.10 points.

Small change. On a €160.00 Tomb Service, the gap between 96.30% and 96.32% works out at about three cents.

We'd call the Gamble a mood setting. It decides how the bonus feels, fast or slow, and very little about what it returns.

Our Two Gambles at €2.00

We took the Gamble twice in the studio's demo, both times on a bought bonus at a €2.00 bet. Both draws landed on a coin rather than an upgrade.

Gamble result: only the silver coin is left after the blast
Our Tomb Service Gamble landed on silver, a 10x prize: €20.00 back on a €160.00 buy (studio demo, ). Source: our own screenshot.
BuyPriceGamble resultPaidShare of price
Tomb Service€160.00silver coin, 10x€20.0012.5%
Dig It€500.00gold coin, 30x€60.0012%

Silver on Tomb Service was a 23.125% outcome. Gold on Dig It was the likeliest result on its board, at 47.5%, and it still paid 30x on a 250x buy.

Two draws prove nothing about weights a server applies on every gamble, and we can't promise any reader a different split. They do show the pace: one decision, one blast, and the bonus is over after a single draw, with €660.00 of buys turning into €80.00.

Why This Is Not a Breach

It is not a breach, because the client's own terms say the picture is not the probability, so unequal weights behind equal tiles break no rule we can point to.

The general terms state that any visual representation of a physical device "does not represent a 'real' physical device". The chance of a stop, they add, comes from the random number generator "and not the number of positions on each device". So the studio's own small print says the number of tiles does not set the odds.

What the studio hasn't done is print the weights where a player looks before choosing. The rules screen lists outcomes, and the odds sit on the server.

What the Server Leaves Unsaid

The server leaves three things unsaid. It doesn't say how a value is drawn inside a tier, whether a casino uses the same weights, or how often the bonus triggers.

When to Take the Bonus Gamble

Take the Gamble only if one quick result suits you better than a full run of free spins, because the return is close to identical either way.

If you want the long version of the bonus, with the Dynamite Collector or the Blast Bar doing their work, press Continue. If you're after Gold Digger specifically, the Gamble is the only road short of 5 scatters, at 3.6% from Tomb Service or 12.5% from Dig It. If neither fits, play the spins: the choice changes the shape of the outcome, not its price.

We do not recommend gambling a bought Tomb Service for a cash prize. The best cash tile, gold at 50x, is €100.00 on a €160.00 buy. All 71.225% of draws that land on a coin fall below that price.

Any visual representation of a physical device (a reel, a wheel of fortune or similar) does not represent a "real" physical device and the probabilities of it stopping on any particular position is determined by the game's random number generator, and not the number of positions on each device.Le Digger general terms and conditions, client 1.33.0

Gamble Weights as the Server Sends Them

BoardWheel nameOutcomeWeightOut of
Tomb Servicegambleupgrade to Dig It1,1514,000
Tomb Servicegamblebronze coin9044,000
Tomb Servicegamblesilver coin9254,000
Tomb Servicegamblegold coin1,0204,000
Dig Itgamble_2upgrade to Gold Digger100800
Dig Itgamble_2silver coin (two tiles)220800
Dig Itgamble_2gold coin (four tiles)380800
Dig Itgamble_2diamond coin100800

Key Terms Used on This Page

Bonus Gamble
The choice offered after 3 or 4 FS scatters: continue into the bonus, which starts with ten free spins, or take one draw from a board of 4 or 8 tiles.
Server weight
The count the game server gives each outcome; the four Tomb Service weights add up to 4,000, the Dig It weights to 800.
Bonus Upgrade
The FS tile on a Gamble board: Tomb Service to Dig It at 28.775%, Dig It to Gold Digger at 12.5%.
Variance switch
Our name for a choice that changes how a result arrives but moves the return by 0.10 points at most: 96.26% never gambling and 96.28% gambling once for a bonus won in the base game, 96.33% and 96.23% for a bought Dig It.
Gold Digger
The Hidden Epic Bonus, starting with 10 free spins and 5 dynamite on every spin; 5 FS scatters or a Dig It upgrade reach it, and it is never sold.

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