Book of Vlad Dice Slot by Endorphina

Every symbol on the board carries its own meter, and that's the part of this Book-of game worth paying attention to. Symbols can land with a blood-drop on them, and each blood-drop tops up one cell of that symbol's accumulator whether or not it formed a win. The meters start at five cells and can grow to twelve. Fill one completely and three things happen at once: that symbol gains the power to expand on your next spin, every other symbol's accumulator gets a bonus cell added to it, and the filled meter switches off and resets. So a symbol you keep seeing slowly arms itself, and arming it makes the rest of the board easier to arm too.

The ornate red spellbook is both the wild and the scatter. It stands in for the regular symbols across the ten left-to-right lines, and three or more of it anywhere awards seven free games. During those spins one chosen symbol turns "bloody" and expands to fill its reel after the normal payout, scoring on count alone the way a classic vampire Book expander does, adjacency ignored. The wild keeps substituting for everything except that special expanding symbol while the round runs. Three more books inside the feature retrigger another three spins, and the accumulator keeps working too: any meter that fills mid-feature hands you two extra free games on top.

If you don't want to wait on the books, the Bonus POP button at the lower left buys the seven-spin round directly, its price scaling with your stake, and it opens on a base spin that drops the three scatters for you. Anything won that way is locked out of the card gamble. That gamble is the usual Endorphina draw: pick one of four face-down cards to beat the dealer, double up to ten times running, joker beats all and never lands in the dealer's hand.

The reels are a wall of large 3D dice, silver, red and purple, their pips rendered as little blood-red gems, sitting alongside the gothic high symbols: a brooding Vlad portrait, a blood amulet, a grey wolf, and the red book. It all sits in a tarnished silver border against a misty moonlit forest of bare black trees, cold blue-grey tones cut with red, with a vintage gramophone horn just visible at the lower right. The dice gimmick is pure dressing over a familiar Book engine, but the per-symbol meters give the base game something to build toward between feature triggers, and a fat accumulator carried into the free games is where the run really stacks up.