Here’s a game similar to sudoku called LingDoku (illustration top right), which is designed for linguists. According to the Speculative Grammarian, the site where I came across it, “LingDoku simplifies the logical components of SuDoku, and introduces a thin veneer of linguistics which confuses outsiders while making linguists feel superior.”.
The rules of LingDoku are straightforward. Using the nine IPA symbols in the table above, complete the unfinished table below. Each symbol occurs exactly once in the box, and no row or column may contain more than one symbol with either the same place or same manner of articulation. If this one is too easy, there’s a more challenging version called Samurai LingDoku here.
The Speculative Grammarian is well worth a thorough browse, packed as it is with “twisted ramblings, academic parody [and] satirical linguistics”, including The Lingo – A car designed for linguists… by linguists, The European Dialects of Cheese, and crosswords for linguists.