The Babylon Project, "The Roleplaying game based on Babylon 5" by Joseph Cochran, and Earthforce Sourcebook supplement by Joseph Cochran, Jon Tuffley, and others, both from WireFrame Productions, 1997. The Earthforce Sourcebook includes a 44 page section of space combat rules by Tuffley based on his Full Thrust system, plus ship control sheets and counters, providing an alternative to Babylon 5 Wars which released the same year.