By far the best app ever invented. Perhaps that’s just because I’m fairly unbeatable* at it, but that’s my opinion.
In addition to being fun, challenging, and great for the ol’ noggin, check out their recent upgrade:
Username: cpswords. Find me. Challenge me. I will kick. Your ass.
*I have been beaten twice. By the same friend. Choose to believe me or not, but the first time the app was crashing oddly, and the second time was a fair beat ALTHOUGH on the second round I accidentally skipped my two powerups and played straight, which, you know, still is a fair win but still… might not have happened had I not accidentally breezed past the powerups!