Click on tiles to uncover numbers that show how many vampire nests are adjacent to that tile. Right-click (desktop) or long-press (mobile) to mark suspicious vampire nest locations. Every 10 seconds, the river will rotate 90 degrees, changing the grid layout and increasing the difficulty. After safely exploring three tiles, activate "Backstroke Mode," which lets you reveal one safe tile for free. Mark all the vampire nests correctly without triggering any to win the game. Correctly marking vampire nests rewards you with holy water pellets. Controls Desktop: Left-click to uncover a tile. Right-click to mark or unmark a vampire nest. Mobile: Tap to uncover a tile. Long press to mark or unmark a vampire nest. Key Features A unique vampire-themed variation of the classic minesweeper with river dynamics. 10-second river rotations that add increasing difficulty as the game progresses. "Backstroke Mode" allows players to reveal one safe tile for free after exploring three safe tiles. Holy water pellets are earned by correctly marking vampire nests, offering extra strategic options. Simple and intuitive controls, suitable for both desktop and mobile users. Engaging gameplay that combines strategy, timing, and logic.