PlayOK, also known as kurnik ("chicken coop"), is a website of classic board and card games to play online against live opponents in real-time.

Since 7 October 2004 all game rules at Kurnik's web pages are available under the Creative Commons attribution-noncommercial licence.

Other interesting technical solutions: According to a gemiusTraffic research, in December 2004 the website was visited by 1.2 million unique users.

After a threat of legal action from Cronix, the company with the rights to Internet versions of the game, Kurnik developed a similar game called "Literaxx" (Literaki ;-) in Polish), which differed from Scrabble only because of a different board, but Cronix considered these changes too minor for it not to be a copyright violation.

Collaboratively developed, it was initially meant to be just a tool to help validate moves in word-based games, but it subsequently replaced basically all other freely available dictionaries used in free software projects.