Darkness Within 1 [Download] Built-in Hint System with 3 Difficulty Levels  Players can choose to play in Standard, Detective, or Senior Detective modes. Unique Inventory System  Utilizing the thinking screen allows players to collect and examine items, and thoughts. Clues can also be researched, combined or used. Dynamic Puzzles and Features  Traditional adventure game puzzles are complimented by deciphering dreams and underlining excerpts in documents to garner critical clues. Enhanced Gameplay Experience  The proprietary game engine enables compelling special effects and stunning visuals in a panoramic first person game environment. Eerie Gameplay Atmosphere  An immersive experience is created by a fascinating story, chilling real-time cut scenes, and haunting music.