Ruzzle is a simple word game in which you have to tap a series of connected letters on a randomized grid to form as many words as you can in two minutes.
Here is a video by a guy called Flupkees who can guess 136 Dutch words in a single session (of the 302 possible words). He is going so fast I cannot even follow what is going on: pot, poter, poten, po, pon, ???, pik, pikt, pikte, prik, prikt, prikte and so on.
(Video: YouTube/Flupkees. Link: Marc van Oostendorp)