When I returned to TTRPGs, I tried to approach running games with an open mind: I assumed that I knew nothing, I took in new ideas, and I ran systems that I would never have run back in the old days. However, as time passed and fresh experiences slowly accumulated, I realised that there was some method to my old madness and that the routines and techniques I had built back in the day can yield surprising results when implemented with one eye on some of the more modern thinking about games.
This lesson stepped into sharp contrast when I was running my recent Call of Cthulhu game. The group kept committing crimes and I found myself needing to answer very basic questions: what are the chances that someone actually starts an investigation? And if they do, what are the odds they track the investigators down? Later, after a disastrous encounter with some cultists, the characters tried to obtain better equipment and I needed to work out how difficult it would be to acquire military-grade guns and medical-grade narcotics.
Nothing in Call of Cthulhu really addresses this beyond luck rolls and NPC skills, but muscle memory fades slowly and I instinctively reached for the Resistance Table that used to appear in every BRP game: compare an active value to a passive value, read the percentage chance of success, and move on. Two quick checks let me resolve those questions without resorting to pure vibes or GM fiat.

The odd part is that I don’t generally use the Resistance Table. In fact, its use is now so unfashionable that Chaosium removed it entirely from 7th edition. So where did that long-dormant instinct come from?
Weeks later, browsing my old Nephilim supplements gave me the answer: The original French edition had an entire lattice of procedural tools welded into BRP. These were rules that shaped play in quiet, interesting ways but were never picked up by Chaosium or anyone downstream.
This post is about that forgotten set of procedures: what they were trying to achieve, how they shaped play, and why they may be worth a second look.
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