Described by publisher SouthPeak Interactive as "a lavishly envisioned steampunk world," Edge of Twilight tells the story of Lex, a bounty hunter caught up in a struggle between two opposing civilizations. The game is said to feature a story and universe that will change based on the player's decisions and interaction with the world.

Developed with Epic's Unreal Engine 3 middleware, Edge of Twilight is currently aimed for a 2009 release window.