emergent

Therefore, patients with ulcerative colitis should ideally be treated before they become emergent cases with toxic megacolon or perforation of the colon.

In short, emergent games are ones that allow a huge range of possibilities and don't dictate a strict, linear flow of events. A strategy game is emergent because so many units can interact and have some effect on each other.

A high-level phenomenon is strongly emergent with respect to a low-level domain when the high-level phenomenon arises from the low-level domain, but truths concerning that phenomenon are not deducible even in principle from truths in the low-level domain.[…] A high-level phenomenon is weakly emergent with respect to a low-level domain when the high-level phenomenon arises from the low-level domain, but truths concerning that phenomenon are unexpected given the principles governing the low-level domain.