Call of Fudge
In a comment against Down with Cthulhu, Bruce Baugh asks me how I did a conversion from Call of Cthulhu to Fudge.
This wasn't intended as a generic CoC to Fudge conversion, more a quick and dirty one-off conversion of a specific published scenario; all I converted were the six pre-generated PCs, and some human-scale opponents. I must point out that I haven't tested these conversions under the stresses of a long-running campaign, or their scalability with regards to some of the more powerful monsters in the game. I guess that Great Cthulhu himself would still do 1d3 player characters damage a turn.
Attributes I handled by converting them on the basis of 2 CoC levels = 1 Fudge level, with 10-11 defined Mediocre, 12-13 being Fair, 14-15 Good, and so on. Anything 7 or lower is just Terrible, while 20+ is either Legendary or on a different scale.
Skills I handled in a similar way. At first, I tried using the percentage equivalents using the chart in the Fudge rules, but the pregen PCs came out with just about all skills at Fair, which seemed a bit bland. So I just converted them with the flat rate of 15 percentiles = 1 Fudge level, with 50% being Fair, 65% Good, 80% Great, and so on. This felt "right", and covered the whole of the 100% range with the seven Fudge levels. It won't work with some other BRP-derived systems that have skills going way about 100%, such as Stormbringer.
Sanity was simply a second wound track, labelled "Uneasy", "Shaken", "Very Shaken" and "Wibble". Sanity rolls were against Willpower (POW in CoC), Shaken or Very Shaken characters get a penalty to the roll.
And that's basically all there was to it.