You Can Do Better Than That (MOS Improvement via Luck)

[Peter Knutsen]

Why not come up with a variant of Luck, that gives automatic improvements to MoS, possibly only on already successful rolls, instead of allowing re-rolls?

If balanced right, that may be a +0% modifier, similar to the +0% modifier on Luck and related traits that makes them run on in-world time instead of on metagame time.

More likely, the base trait may need to cost 10, 20 or 25 CP/lvl. I'll just drop the idea in here, leaving the actual design implementation to others.

[DangerousThing]

I just posted my house rules on Luck to my blog (http://dangerousthing.com).

Basically I use a luck point system and luck can be used for a lot of things.

[martinl]

Originally Posted by ericthered

and showing that GURPS luck is about not failing, not about critical successes!

IME, yes, but you can triple your chance of a crit by using luck. It's just that even then (6 or less, try three times) we're talking ~25%.

Originally Posted by Anthony

The chance to improve your roll is 1 - (chance to roll your current roll or higher on 3d6)^2 -- i.e. if you roll a 9, the odds of rolling 9+ on 3d6 is 160/216, squared that is 0.549, so you've got a 44.1% chance to improve your roll. You can apply that to any other value; to roll 7- is equivalent to beating an 8, or 181/216, for a total 29.8% chance of getting a 7 or lower.

That tells you the odds of improving, yes, but I wanted to know how much it would improve, on average.