Knoword is a free online game with an emphasis on vocabulary, spelling and quick thinking.

Screen shot 2010 12 20 at 3.16.16 PM 500x134 Afternoon brain booster: Try Knoword

Here’s how it works: When you begin, you will be given one randomly generated dictionary definition along with the first letter of its corresponding word. You must fill in the rest of the word to experience a gain in points and an added time bonus. You will start off with one minute before the game ends, and every word is an opportunity to extend your time. If you’re ever stuck on a word, just hit the skip button and a new puzzle will present itself.

Screen shot 2010 12 20 at 3.17.04 PM Afternoon brain booster: Try Knoword

The words are actually much easier than I expected. In fact, this tripped me up at first. Once you start to get the hang of the game’s simplicity, and you start to score correct answers, you will notice your Word streak counter increasing. If you sign up for an account, you can accumulate badges, save your high scores and see your rank in comparison to other players. Sign-up is free and relatively painless.

The second time I got 10 words for a total of 165 point. The site is a bit temperamental (the game wouldn’t load a new word on my 3rd attempt)! The fourth time I got 18 words right for a total of 315 points and the 5th? 19 words right for a total of 335 points. Now I’m not that brilliant and to be honest, the game started to repeat many of their words. Once you’ve signed up, you will also have the option to play the advanced level.