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<blockquote data-quote="NotAYakk" data-source="post: 8791219" data-attributes="member: 72555">That isn't the Bell Curve that does it.It is just the lower variance.1d10 has a variance of 99/12.&nbsp; So replace 1d20 with (1d10+5) and you get basically the same game as 3d6.Or, lower all DCs by 5.&nbsp; Unarmored is 5 AC, spell saves DCs are 3+blah, etc.And roll 1d10 instead of 1d20 for your checks.No curve in 1d10.&nbsp; Almost the same probabilities as rolling 3d6 vs default DCs.Between 7 and 14? Subtract 5!&nbsp; Between 2 and 9.&nbsp; Guess what the chance of a d10 between 2 and 9 is?&nbsp; 80%.Guess what the chance of 3d6 between 7 and 14?&nbsp; About 80%.Not a coincidence.But people build systems using 3d6 and not for 5+1d10 and talk about the bell curve, I suppose because they think it matters.For 1d10, you'd probably want a crit failure system for 1s and 10s that isn't auto-success/failure.&nbsp; Almost anything would do, up to and including &quot;flip a coin; heads, you auto-succeed on 10 or auto-fail on 1&quot;.</blockquote>

[QUOTE="NotAYakk, post: 8791219, member: 72555"] That isn't the Bell Curve that does it. It is just the lower variance. 1d10 has a variance of 99/12. So replace 1d20 with (1d10+5) and you get basically the same game as 3d6. Or, lower all DCs by 5. Unarmored is 5 AC, spell saves DCs are 3+blah, etc. And roll 1d10 instead of 1d20 for your checks. No curve in 1d10. Almost the same probabilities as rolling 3d6 vs default DCs. Between 7 and 14? Subtract 5! Between 2 and 9. Guess what the chance of a d10 between 2 and 9 is? 80%. Guess what the chance of 3d6 between 7 and 14? About 80%. Not a coincidence. But people build systems using 3d6 and not for 5+1d10 and talk about the bell curve, I suppose because they think it matters. For 1d10, you'd probably want a crit failure system for 1s and 10s that isn't auto-success/failure. Almost anything would do, up to and including "flip a coin; heads, you auto-succeed on 10 or auto-fail on 1". [/QUOTE]

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