Before the iconic SPECIAL system defined the wasteland, Fallout was built on an entirely different foundation. For most of its development between 1994 and early 1997, the game utilized a licensed tabletop roleplaying system known as GURPS (Generic Universal Roleplaying System).

This connection to GURPS only severed when creator Steve Jackson objected to Black Isle’s use of the system due to the "stupefying levels of violence" present in the Fallout concept. Following this dispute, the developers pivoted to the SPECIAL system we know today, altering the course of RPG history forever.

The Lost Archives of GURPS Fallout

For three decades, details regarding the GURPS version of Fallout remained largely a mystery. Fallout creator Tim Cain recently revealed that he believed all documentation related to this era had been lost forever.

According to Cain, he handed over all GURPS-related materials to an archivist at Interplay nine months before the game's release. However, it appears those files were never properly preserved. While Cain destroyed his own personal archives upon leaving Interplay, he recently discovered surviving written notes detailing the final attributes intended for the game.

These recovered notes include a massive list of:

  • Advantages (purchased with ability points)
  • Disadvantages (providing points in exchange for debuffs)
  • Quirks (minor traits designed to add character flavor)
  • Skills

Hyper-Specific Character Traits and Quirks

The GURPS system functioned differently than the streamlined SPECIAL system. It relied on only four base stats—strength, health, IQ, and dexterity—but balanced them through a voluminous list of modifiers. While some advantages were practical, such as "acute hearing" or "peripheral vision," others were purely social, including various levels of attractiveness like "handsome" or "very handsome."

Conversely, the disadvantages could be quite punishing, ranging from "bad breath" and "stuttering" to being labeled as "hideous"—the most disgusting inhabitant of a Vault.

The most fascinating aspect of this lost system was the Quirks. These were minor traits intended to trigger specific, unique interactions within the game engine. Some examples include:

  • Believes in UFOs
  • Snores loudly
  • Hates cows
  • Fear of heights

While the GURPS system offered a level of granular character depth that sounds highly immersive, it also appears significantly more convoluted than the final product. Ultimately, while these eccentric traits would have added unique flavor to the wasteland, the transition to the SPECIAL system likely provided the mechanical clarity that helped make Fallout a genre-defining success.