Clock Tower is a stealth-based survival horror adventure video game series, created by Human Entertainment and continued by Sunsoft. The series plays like a horror film and unlike some of the other survival horror games, the Clock Tower series does not focus on shooting creatures or using violence, but rather using the players surroundings to hide and escape while solving puzzles and following the twisting storyline.

The main character is usually quite helpless compared to the villains, so the main emotional connection to the game is the fear of being captured or discovered.