If you’re a Half-Life fan and loved the story, but had niggling questions about the backstory, the Half-Life saga story guide should clear several doubts that you have. In it, Chan Karunamuni explains the events and history of the Half-Life world. It seems a G-man sighting gallery is also in the works - that will be cool because I’ve only seen the G-man 2 times in Half-Life 2.

Via Jozsef Sasvari (on IM).