Sleuth is an open-ended detective RPG where you solve mysteries by searching for clues, questioning suspects and interviewing witnesses.  Published by Hypothetical Software since March 2004. This browser-based game allows players to take on the persona of a detective, solve cases and engage in interactive fiction. The unique random-mystery generator allows for an endless number of mysteries at a wide range of difficulty levels.Players can enjoy Sleuth: Noir for free, or they can pay a monthly subscription fee to experience premium content and expanded gameplay.