For a free game, there's a lot here, basically everything you'd need for generic pulp scifi of the 1930s through the early 1980s. The system involves rolling 2 dice, detemined by attributes, skills, etc, and taking the best and comparing the number to either an opposed roll or a set difficulty. Did I mention this is free? Next, hopefully we'll see a Sword & Sorcery offering.
[5 of 5 Stars!]