Roll under

From 1d4chan

A roll under mechanic is almost a mirror to the roll over mechanic. It is most commonly used against an ability of the character, in which case they must roll lower than their ability to pass.

Note that this doesn't always mean "the lower the roll, the better": Some games can rely on rolling as high as possible as long as it's under the limit (like in The Price is Right); this makes one's ability score an "upper bound" of how well they can succeed.

Games that use a Roll under mechanic[edit]