"experiment: one" is a full version game available on Windows platform developed by Redstation9. It is a simulation game falling under the category of psychological horror games. The game is designed to be played in the first person perspective and can be completed in approximately 90 minutes.

The game revolves around the story of a girl named Evelyn who works at a helpline. One day, her boss asks her to work the night shift. As the night progresses, the game builds an atmosphere of quiet horror that keeps the player on edge. It is a walking simulator game with an expanded system of dialogues, and the end of the game depends on the choices made by the player.

However, it is important to note that the game comes with a warning for potential epileptic seizures associated with increased sensitivity to light. The game features flashing images that can trigger seizures in some individuals who have not previously experienced such seizures. As a result, a reasonable restriction of the gaming audience is recommended.

In conclusion, "experiment: one" is a unique psychological horror simulation game that offers an immersive experience to the player. The game's focus on dialogues and the player's choices adds depth to the game's story. However, players who are sensitive to flashing images should be cautious while playing the game.