[1]: 53 [2] Banner obtained a grant that funded the printing of blank hex sheets (suitable for making war-game maps).

Adding new members Loren K. Wiseman and John Harshman, the ISU Game Club drafted a variety of designs.

In 1974 the company published five new titles, including Coral Sea, based on the World War II naval battle.

Miller was brought in to redevelop the rules, resulting in a much improved second edition released in 1979 that received good critical reception.

[3] While at GDW, Miller designed a total of 74 games and products, with an average of one every four months, including Imperium; and, co-designed MegaTraveller and 2300 AD.

[citation needed] Miller wrote a letter to the company Digest Group Publications (DGP), in 1987 asking them to help GDW make the large amount of published material for Traveller more accessible, which resulted in the second edition of the game known as MegaTraveller.

[1]: 63  Miller partnered with Sweetpea Entertainment to license media rights for his science-fiction property in exchange for funding to get Imperium Games running in February 1996, as a new publisher dedicated to producing only Traveller material.