Every Nitro Gaming title ships with its full math report from Engine. This article walks through the report for Goblin Gold Mine, math version 16.
How often it pays
In the base game, 13.12% of spins pay something, about one spin in 7.62. 8.4% of all spins return the bet or more, and 4.7% return part of it. The remaining 86.88% pay nothing.
Engine also reports streaks. On average there are 8 spins between wins and 12 spins between profitable spins. A run of 49 non-paying spins, or 79 losing spins, has roughly a one-in-a-thousand chance.
Where the 96.70% comes from
RTP is an average over millions of rounds, so it helps to see which wins supply it.
- Wins under 20x supply 36.40% of the return.
- Wins between 20x and 1,000x supply 56.27%. The 20x to 50x band is the largest single contributor at 18.35%.
- Wins of 1,000x and above supply 4.01%.
A win of 100x or more lands about once every 820 spins; a win of 1,000x or more about once every 46,500 spins. Shares are rounded and add to 96.68% here.
Seven modes
Goblin Gold Mine has seven modes. Each cost is a multiple of the base bet, and each targets the same return, with Vein Hunt at 96.53% the only exception.
| Mode | Cost | RTP | Hit rate | Returns cost or more |
|---|---|---|---|---|
| Base game | 1x | 96.70% | 13.12% | 8.4% |
| Ante | 5x | 96.70% | 12.68% | 6.6% |
| Vein Hunt | 100x | 96.53% | 99.86% | 33.0% |
| Deep Vein | 200x | 96.70% | 91.00% | 10.7% |
| Feature Spins | 250x | 96.70% | 91.00% | 12.0% |
| Mystery | 500x | 96.70% | 99.94% | 36.2% |
| God Mode | 1000x | 96.70% | 91.00% | 27.2% |
A high hit rate on a bonus mode does not mean it usually returns its cost. Mystery pays something on 99.94% of buys but returns its 500x cost or more on 36.2% of them.
Validation
Goblin Gold Mine passes all seven of Engine's base-mode compliance checks and clears every risk constraint at both the 2-star and 3-star bet tiers. The full report is on the math page.
Sources
- Engine math report: Goblin Gold Mine, version 16
