Khalida Nyoka
I never did find out what sytem Call of Cthulhu used...
It obviously has a d20 version now... did it use d10 before? Or was it like GURPS (General Universal Role-Playing System) and used a system involving 6-sideds?
The old standard Call of Cthulhu is often referred to as "Call of Cthulhu BRP" - the BRP standing for "Basic Role Playing", which is how a lot of peopel refer to Chaosium's house system.
The basic idea is that each character has a number of attributes rated at around the 3-18 scale, skills at the 1-100 scale, and hit points which are based on your attributes and don't go up over time.
Skills are rated as percentages, such as "Locksmith 65%", and to roll against them you would usually roll percentage dice to hit less than or equal to the skill rating. If you rolled 20% of the skill, that was often an impale (in combat) or critical result.
Stat rolls were often based on multiples of a stat - so if there was an INT based challenge, then an easy one would be rolling against INTx5, a hard one would be maybe INTx3 or even just INT!
I've also played Call of Cthulhu with FUDGE.
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