[2] In 1989 Pulver designed the first version of GURPS Ultra-Tech, an equipment guide intended to be used with science fiction settings.
The latter featured a mathematically complex vehicle-construction system,[3]: 109 allowing the creation of vehicles ranging from a stone-age canoe to faster-than-light starship.
In November 1998, fellow Canadian Mark MacKinnon brought Pulver on to Guardians of Order, and Pulver took the lead in developing Big Eyes, Small Mouth from its simple beginnings to become a more complex game, including a skill system and vehicle rules.
[3]: 336 Pulver continued to write for Guardians almost to the point when they ceased publication, notably contributing to their anthologies Ex Machina (2004) and Dreaming Cities (2005).
Steve Jackson and David Pulver coauthored a novella, Thera Awakening, that was distributed with the Interplay computer game Stonekeep.