An ancient book found in a library opens the door to a medieval mystery quest. A person that was born centuries ago has left messages encoded in Sudoku puzzles. You start to solve the puzzles and enter a medieval world full of miracles and vampires.

You can solve the mystery quest or hone your skills in training mode. Vampire Sudoku offers 27 puzzles in story mode, and an unlimited number of Sudokus to play in training mode. You can train playing 4x4, 9x9 or 16x16 giant Sudokus.

The game offers achievements and leaderboards. You can save and restore your game progress to the cloud, thus starting a Sudoku on one device and completing it on a different one.