Book of Dead in the Mainio Casino catalog
When choosing the Book of Dead slot at Mainio Casino, you find the original title Rich Wilde and the Book of Dead, developed by Play'n GO. In the context of the brand, this reference is associated with the first deposit announced as 100% up to €300 + 25 spins, with a minimum deposit of €20 (conditions not confirmed by an independent official source and should be verified directly in the operator's terms before depositing). For details about the promotional structure, see Mainio Casino Bonus.
The mechanics combine 5 reels, up to 10 paylines and an expanding symbol feature during the free spins. As Play'n GO classifies the game with high volatility, the results vary sharply over a session, with no guarantee of return.
Slot technical sheet
| Field | Information |
|---|---|
| Game | Book of Dead (Rich Wilde and the Book of Dead) |
| Studio | Play'n GO |
| Type | Video slot, 5 reels, up to 10 paylines, Egyptian theme, high volatility |
| Mainio context | First bonus 100% up to €300 + 25 spins and minimum deposit of €20 (conditions not confirmed by an independent source — check with the operator). |
We do not indicate a fixed RTP value for this slot because the theoretical return is an average calculated over many spins and depends on the configuration made available by the operator, since it is not confirmed for the Mainio Casino catalog. Before playing, consult the rules and the paytable inside the game itself.
Rich Wilde and the Book of Dead: basic structure
Book of Dead follows the character Rich Wilde in an Ancient Egypt setting. The grid uses 5 reels and allows between 1 and 10 paylines to be activated, adjusting the bet amount before each spin.
The interface includes autoplay mode and works on computers and mobile devices. There is no separate bonus game outside the main reels: the focus is on matching symbols on the active paylines and triggering free spins.
Symbols: from Rich Wilde to the tomb wild and scatter
The highest-value symbols in the paytable represent Horus, Anubis, Osiris and the explorer Rich Wilde. Matching five Rich Wilde symbols on an active payline awards the highest prize in the base table. The tomb symbol combines two functions: it acts as a Wild, replacing other symbols to complete lines, and as a Scatter.
When three or more Scatter symbols appear in any position on the 5 reels, the Free Spins sequence is activated, without needing them to be aligned on a specific payline.
How the expanding symbol works in free spins
At the start of the Free Spins, the game randomly selects a regular symbol to function as an expanding symbol throughout the round. Whenever that symbol appears in sufficient quantity after the calculation of the normal lines, it expands to cover all positions of the respective reel.
This mechanic concentrates the slot's potential in the free spins and explains its high variance (high-variance). In short sessions, the real behavior often deviates from the theoretical average.
Context with Play'n GO and the Mainio Casino Bonus
At Mainio Casino, the Play'n GO studio page lists Book of Dead together with Fire Joker, another Play'n GO title in the catalog. Joker's Jewels is mentioned here only for comparison: it is a Pragmatic Play slot with a simpler 5x3 grid and no free spins round, so it belongs to Pragmatic Play's own catalog rather than Play'n GO's. See Joker's Jewels for how that format works.
At Mainio Casino, the 40× wagering requirement (deposit + bonus) refers to the general condition of the deposit bonus and not to the specific contribution percentage of this slot; these promotional rules need independent confirmation. The division of the three deposit offers and the difference between free spins and cash spins are detailed on the Mainio Casino Bonus page.
License verification and rules before playing in Portugal
In Portugal, the operation of online games and betting requires a license issued by the Gaming Regulation and Inspection Service (SRIJ), and the legislation defines the player as an adult individual (18+). The operating entity, regulator and applicable license for Mainio Casino are not confirmed in the SRIJ register for Portuguese territory.
Before using any platform, check in the regulator's public register whether the entity appears on the list of licensed operators and whether the site URL exactly matches the authorized domain. Also confirm in the official terms the operator's legal identity, support contacts, withdrawal rules, any fees, the complaints procedure and the responsible gaming and self-exclusion tools.