Bloodthirst is an enthralling online slot game that transcends you into the world of horror with its backdrop of a mysterious castle under the full moon and an intriguing stone grid reel display. The game is applauded for its phenomenal features and mechanics that contribute significantly to the gaming experience.

**Key features of Bloodthirst Slot game**

- **Monster Takeover Feature**: The game is dominated by Monsters that can capture whole reels, allowing you to win up to 20x your stake per reel. You can fill the entire screen to claim prizes up to 2,500x your stake for the top-tier Demon Monster.

- **Prominent Monster Symbols**: Bloodthirst exhibits premium monster symbols that could yield between 6x and 10x your stake for five of a kind wins. Moreover, you may encounter Wild symbols that would help you secure wins and can pay 20x your stake if you manage to land five of a kind.

- **Monster Reel Creation**: If you can land four monster symbols on the same reel, you could trigger a full-reel merged monster reel after the normal win calculation. A single monster reel can accumulate prizes of 5x, 10x, 15x, or 20x for the Ghoul, Vampire, Werewolf, or Demon, respectively.

- **Monster Reels Mastery**: By landing five monster reels of the same kind simultaneously, they take over the entire screen thus forfeiting any regular line wins or monster reel payouts, instead, you get a mega prize of 100x, 250x, 1,000x, or 2,500x your stake for the Ghoul, Vampire, Werewolf, or Demon, respectively.

- **Bloodthirst Bonus Round**: This round gets triggered if you land three FS scatter symbols, awarding you with ten free spins. The major difference it brings from the base game is the augmented likelihood of triggering Monster Reels.

- **Immortals Bonus Round**: Landing four FS scatters in view triggers this round which also bestows ten free spins. A monster symbol is chosen at the start to become the “main symbol for the feature, and only this symbol will expand. When a full reel of the chosen symbol lands, the reel becomes marked; Fernow, all marked reels always expand to convert into monster reels for the rest of the bonus round.

- **Bonus Buy Menu**: In some jurisdictions, you can pay three times your regular stake to trigger a bonus round. It makes you five times more likely to instigate a bonus round.

In summary, Bloodthirst slot game, with its captivating horror theme and remarkable features, is set to offer you a thrilling gaming experience. Whether you are embarking on the Monster Takeover or trying to uncover the ‘main symbol’ of the Immortals bonus round - there's never a dull moment!