Cracking the slot reels - Here you go!

[Zoozie]

I figured out the problem. Now I get realistic house edge values for Isis.

With 3+ scatters triggering 20 free spins, I get a payout of 94.61%. If I average the increased payout for 25 spins and 30 spins with 4+ scatters at the corresponding ratio of the chance of 4 and 5 scatters, I get a net payout of 94.81%. I believe this is the true payout. So as I suspected, payout is a bit less than normal 5-reel, as it is higher variance than just about all other non-progressive slots.

Other stats from Zoozie's program are below:
Base payback(no free spins):0.4963801551046911
Probability for getting a feature each spin:0.006559066216716737~1/152
Hit frequency (1-line):0.08908356425275846

Thank you! I have been awaiting an analysis of Isis for years, but missed the reels until now. You approximation is indeed a 100% exact. What was the average number of freespins won/feature ? I would guess something like 20.25, which is a little higher than the 20 from 3 scatters which you hits most often.

The data shows the base payout is only 49% which just states it is indeed a very high variance slots, which we already knew of course. This is much lower than any of the other slots.

So I trust my program (of course) and your finding of the reels also. As you saw just a little mistake will alter the payout% a lot. And the final value near the 95% mark is a very strong indication also that it is correct - since all other analyzed MG are very close to the 95% payout.

[aka23]

Thank you! I have been awaiting an analysis of Isis for years, but missed the reels until now. You approximation is indeed a 100% exact. What was the average number of freespins won/feature ? I would guess something like 20.25, which is a little higher than the 20 from 3 scatters which you hits most often.

The freespins/feature was 23.02 with 3 scatters and 29.90 with 4 scatters. I estimate the overall average to be 23.12.

[Zoozie]

The freespins/feature was 23.02 with 3 scatters and 29.90 with 4 scatters. I estimate the overall average to be 23.12.

Okie, I thought you had estimate the average number of freespins won at feature by using weighted average over 3,4,5 spins, and then used this number in the #feature spins box.

But the result will be the same of course.

[aka23]

Okie, I thought you had estimate the average number of freespins won at feature by using weighted average over 3,4,5 spins, and then used this number in the #feature spins box.

But the result will be the same of course.

I believe you'd near a linear relationship with free spins to use the weighted average number of freespins... that is unless you multiplied weights by a factor related to the chance of retrigger or similar. I found it easier to compute three sets of results and weight the results accordingly.

[WonderingSpirit]

One small question.

Why do some slots, when you enter, show a shitload of scatters? 2 or 3 scatters one one reel.

Im pretty sure there are only one scatter pr reel.

Is it a bug?

Here are 2 screenshots. One from Happy Valley and one from MedievalMoolah

[KasinoKing]

One small question.
Why do some slots, when you enter, show a shitload of scatters? 2 or 3 scatters one one reel.
Im pretty sure there are only one scatter pr reel.
Is it a bug?

I've seen this a few times too, and I don't believe it's a bug, just sloppy programming.
I think they just put random symbols into all the positions on start up, because it doesn't really matter.
WHY they do this is beyond me...

KK