Assisted by David L. Pulver he took on the task of re-designing the entire rule system for the a fourth edition of GURPS beginning in September 2002 .
David L. Pulver is another Canadian and veteran role - playing game designer .
Assisted by David L. Pulver , another Canadian and veteran role - playing game designer , he took on the task of re-designing the entire rule system for the a fourth edition of GURPS beginning in September 2002 .