Author · SlotSimba
Joe
Built SlotSimba and maintains its catalogue.
About Joe
Joe is an independent web developer and the person behind SlotSimba. He built the site, maintains its catalogue of free slot demos, and writes everything published here.
SlotSimba exists because slot specifications are published badly almost everywhere. Return-to-player figures get quoted without saying which build they describe, volatility ratings get printed as the word "high" with no scale attached, and maximum-win values in coins get reprinted as if they were multipliers of your stake. The site's rule is that a figure appears only where a studio published it, and that a blank says so plainly rather than being filled in with something plausible.
The site operates no casino, takes no bets and holds no funds. Every game on it runs in demo mode on virtual credits.
Posts by Joe
Specifications · 29 October 2026
What RTP actually tells you — and what it doesn’t
It is the one number every slot site quotes and almost nobody explains. Here is what a return-to-player figure is actually measured over, and what it cannot tell you.
Specifications · 29 October 2026
Volatility is a number from 1 to 5. Here’s what each one feels like
Most sites print “High” and move on. The rating is an integer on a five-point scale, and the difference between a 2 and a 5 is the difference between two completely different games.
Specifications · 29 October 2026
Why slot max-win figures so often don’t add up
One field, two completely different meanings, and an industry that prints them interchangeably. This one cost us a rebuild to get right.
Playing · 29 October 2026
How to get something useful out of a free slot demo
Same reels, same maths, no money. That makes a demo excellent for three questions and worthless for a fourth — and the fourth is the one people use it for.