Velislava Tancheva
Slot mechanics analyst, author of the casinonine.vip guide.
Velislava Tancheva writes and updates the pages of this site in both languages. Her subject is narrow on purpose: how casino games are built and what that means for the person pressing the spin button. She is interested less in themes and graphics and more in the rules hidden behind the small «i» icon in the corner of a game — the paytable, the feature description, the volatility label where a studio publishes one, and the RTP figure.
Method
The work behind each page follows the same order:
- The game's info panel and paytable. This is where a studio states the symbol values, the number of reels and rows or ways, the feature triggers and, very often, the RTP of the version that is running. Because studios frequently ship one title in several RTP versions, the panel inside a particular casino is the only number that applies there.
- Studio rules. Published game rules describe what happens on disconnect, how a bonus round ends, how multipliers combine and whether a bonus buy exists.
- The operator's terms. Bonus terms list wagering, contribution by game type, the maximum bet allowed with an active bonus and the games excluded from bonus play.
- Public registers. For licences, the reader is sent to the regulator's register of their country rather than given a claim.
Where these sources are silent, the page says so. Velislava does not fill gaps with estimates presented as facts, and she does not quote volatility or RTP for a game whose studio does not publish them.
What she does not claim
She is not employed by the operator and has no access to player accounts or back-office data. Her pages explain rules and mechanics; they do not contain personal win stories. The value of the guide is meant to come from explanations you can verify yourself in the same panels and documents.
Topics she covers
- Volatility and session budget: why the same stake feels very different on two games.
- RTP as an operator setting and how to find the version in use.
- Demo mode versus real money, and why a demo may not mirror the live configuration.
- Hold and Win respins, coin collectors, multipliers, free spins, bonus buy and jackpot tiers.
- How slots contribute to bonus wagering and which game types are usually excluded.
Contact
Questions, corrections or suggestions for a topic can be sent to info@casinonine.vip. Please include the page address. Velislava does not give personal betting advice and cannot help with account issues — those belong to the operator's own help desk, described on the support page.