Jeffgoldblumle - Free 12-letter word game in 3 tries
Jeffgoldblumle is a free browser word game built around one tight loop: you get three attempts to guess a twelve-letter word, and each guess returns green and yellow clues that show which letters sit in the right spot and which belong somewhere else. The twist is a ten percent chance that the answer is not the expected name, so the pattern you memorized stops working exactly when you get comfortable. Rounds take a couple of minutes, there is no signup and no download, and it works well as a quick focus reset between tasks.