"It was a cold morning when I went to visit Emma's House. A lonely house, far away from the city..."

Claude, a high school student, pays a visit to his classmate Emma. A game of hide and seek leads Claude to find a strange knife in the attic, and both he and Emma are thrown into an otherwordly realm. This world, haunted by ghosts, is ruled by the mysterious Phantom, who appears only when you're alone. Now they must find a way to restore the house to its original form, and seal back the rampaging ghosts.

Will you suceed in solving the riddle of the house? Will you fall victim to the curse of the knife and the Phantom? Death is lurking in the darkness, and ready to welcome you with open arms.

"The Clean Knife" is an RPG horror game based around puzzle solving.

• Every death is a permanent consequence! Choose between life and death and affect Claude's fate.
  
• Solve puzzles and seek a way out using different tools and abilities unlocked throughout the game.
  
• Meet eerie shadows and creatures that reside within the haunted house.
  
• Unlock six different endings, depending on your choices and actions.