1. 1973-1977. We started as GDW Game Designers' Workshop, publishing wargames for education and recreation, in idyllic Normal, Illinois. Ultimately, we published one new title every 22 days for 22 years.
2. 1977-1996. We expanded into role-playing games with Traveller, Twilight: 2000, 2300 AD, Dark Conspiracy, and more.
3. 1996-2017. Ultimately, we closed down GDW and the staff went their separate ways; FFE Far Future Enterprises picked up some of the responsibilities and now publishes Traveller (currently T5 the fifth edition) as well as CDROM versions of older Traveller and other RPGs.