The phrase "additional wrinkle" means an extra complication or difficulty added to a situation or problem.
Sentences with «additional wrinkle»
But there's one additional wrinkle here worth mentioning. (veteransunited.com)
One additional wrinkle with emerging market currencies is that many do not have floating exchange rates or even fully convertible. (canadiancapitalist.com)
A nice additional wrinkle is that an additional route to the main event mission will unlock only after a certain number of kills. (blogs.sega.com)