Elena Ferraro writes about the mechanics and the arithmetic: which slot bonus families actually exist and what to check in each, what a bankroll is really governed by, and why betting systems cannot change the house edge.
Her approach is to do the multiplication in public. A 50× requirement on a 100 bonus is 5,000 of turnover, and at a 4–8% house edge that has an expected cost larger than the bonus. Published house edges, published RTP configurations and published regulatory rules are the inputs; nothing else is needed.
Arithmetic that a reader can redo, from figures a reader can open: the game’s information panel, the operator’s published terms, and regulators’ published rules such as the restrictions several markets place on buying a bonus round. An earlier version of this page claimed 4,500 real-money sessions and a reproducibility protocol. No such sessions were run, and the claim has been withdrawn.
The eleven «weirdest features» listed here before were invented and credited to no studio. These are the families that exist and can be checked inside any game.
Explore more
This page cited three different session counts for one claimed study. No sessions were run. What is left is the arithmetic, which needs no corpus.
Explore more
There were no 1,800 sessions and there is no «statistical edge» to report. What progressions really trade is a high chance of a small win for a small chance of a large loss.
Explore more