Not good enough.
The concept is good, and the game in itself is fun, but I don't know how they've managed to screw their stock of words up so badly! It's insane, really. At first I thought it was just a limited vocabulary (words like "viol" weren't possible), but as one moves on in the game, words that have been possible before suddenly aren't allowed. A good example is between level 21 and 22 on "Hobbies", where the word "ort" goes from existing to non-existing. Now I'm at a level where words like "grab" suddenly don't work anymore. It seems completely random, and that's extremely unsatisfactory for someone like me who's kind of a word-nerd. Out you go.