Games like this have become quite popular lately. Wordbrain and Wordbrain 2 often get all the credit, but his game is also quite good. It was first released as Word Puzzle and is now called Word Kingdom. Hundreds of levels gives hours of gameplay. There are a few words which are maybe a bit tricky which may be because of a language barrier between the developers and English, but these issues are pretty rare. We have all the answers if you need help!