Avenging Angel is at its core an "interactive story" set in an imaginary world, but the exploration, experiencing, and participating happens through time tested and familiar FPS dynamics. The story takes place on Planet Earth, in a steampunk setting, roughly 10000 years from our current day and age, where 21st Century has not only passed from history to legend, but also from legend into myth.
This is a pre-alpha demo of Avenging Angel. v1.0. The package also includes user guide both in pdf and iBooks formats.