Chambers was the lead designer on a number of Warhammer 40,000 spin-off games, such as Necromunda (1995) and Battlefleet Gothic (1999), produced by Specialist Games. These games were released at a time of major growth for Games Workshop and "were designed with expansions and more miniatures sales in mind".
Chambers was the lead designer on several Warhammer 40,000 derivative titles such as Necromunda (1995) and Battlefleet Gothic (1999), developed by Specialist Games. These games were published during a period of rapid growth for Games Workshop and "were designed with future expansions and more miniature sales in mind."