K2← All K2 questionsCan players look through the cards they have already played?Best reading — unconfirmedThe designer explicitly gave no official ruling, only a personal opinion, and another replier says most groups disallow it.folko · Designer · 2013-09-18russ · Community · 2013-09-17disagreesruss · Community · 2016-01-05Jlerpy · Community · 2016-01-04The rules do not say. The designer has no official answer but thinks looking through used cards is a good idea and suggests playing as you like; many groups do not allow it, so agree it before you start.More K2 questions · Full rulebook