I got this game free with my Wii console, and i am actually really liking it.
You create your own character, and have your own teacher. There are numerous word puzzles to play, and you unlock more as you get better. Some are really fun too, like word cereal.
It is also really good in that you tilt the wii remote to change options, and it is all really interactive.
Once you hit a certain score you get reassessed for improvement, (or not) and you have a word knowledge score/level. It is a similar concept to brain academy in that way.
It is a real good game for those who are competitive, and it does get addictive.
However, i don't think it is worth the price tag. I would wait for it to come down a bit in price, or buy it pre-owned.
My advice: buy it later.