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The Bought Round / the gamble
a win staked on a double-or-nothing
The gamble: a win put back at risk
The gamble is the odd one out. It costs nothing to be offered, it does not change the price of a spin, and it does not touch the route to a feature. It takes a win you already hold and offers to stake it on a double-or-nothing. That makes it the only control on this desk that can take money out of the reader hand and put it back into the game.
Desk spec
- gambles sampled
- 180
- a win gambled
- 100.00
- doubled
- 84
- lost
- 96
- mean outcome
- 93.33
- edge against keeping
- 6.67
The control platesample A / 1,200 extra-stake rounds, four controls
feature buy100x stakeBuys one whole round at a fixed price. The stake moves from 1x to 100x in a single decision; the return is the bought round's, not the base game's.
ante bet+25% per spinRaises the price of every spin a little and the stated chance of reaching the feature a lot. It makes a non-triggering spin dearer and can make the route to the feature cheaper.
super stake2x per spinDoubles the stake for roughly double the quoted chance. It changes the size of the bet and the variance, not the expected cost of reaching the feature.
gamble0 until a winCosts nothing to be offered, then stakes a win on a double-or-nothing. It is the only control here that can take money already won and put it back at risk.
Direct answerThe gamble feature offers to stake a win already held on a double-or-nothing, at odds close to but usually worse than even money. Of 180 invented gambles on a 100.00 win, 84 doubled it and 96 lost it, a mean outcome of 93.33 - so gambled money returned 6.67 less than the same win kept, which is the edge on the gamble itself.
180 gambles on a 100.00 win
| outcome | paid | gambles |
|---|
| doubled | 200.00 | 84 |
| lost | 0.00 | 96 |
| mean outcome | 93.33 | 180 |
Near even money, not even
A fair double-or-nothing on a 100.00 win would double it 90 times in 180 and lose it 90 times, for a mean of exactly 100.00. The sampled gambles doubled it 84 times and lost it 96, for a mean of 93.33. The 6.67 gap is the price of the gamble, and it is paid by the class of all gambled wins rather than at the moment of any one. That is why a gamble can feel close to free - most readers remember the doubles, not the pattern - while costing money in aggregate.
The cost of a gamble, in the class and in one hand
in a class of 180 gambles on 100.00 wins
a fair offer would return 100.00 on average
the sampled offer returned 93.33 on average
the edge 6.67 per 100.00 staked
in one hand, the same edge is invisible
doubled: 200.00 - looks like a win of 100.00
lost: 0.00 - looks like a slump
so the gamble is the only control here
whose cost is paid in aggregate rather than per decision,
and the only one that stakes money already won
Reading a gamble
- It costs nothing until a win exists - so it is never part of the price of a spin.
- The odds are quoted near even money; the edge is the gap from true even money.
- The cost is paid in the class of gambles, not visibly in any one.
- It stakes money already won, which is the one thing the other three controls never do.
- A game may allow a gamble to be repeated; each repeat is the same edge again.
This desk names no real game or studio and prints invented outcomes. It gives no advice on whether to gamble a win and makes no claim about any real game odds; the arithmetic shows only what a near even-money offer costs when it is repeated.