Lumosity made its name with brain games that help improve your mind. It got more than 70 million members and subscribers that way. Now it is expanding with a series of five web games that help you ...

This game tests out your vocabulary through an ongoing “test.” Each round consists of 5 questions that stem from the word you searched for on Google if that’s how you accessed the game.

Gaming interfaces have seen a renaissance of late thanks to the Nintendo Wii and touch screen controls. But Scribblenauts may be the first game to use your vocabulary as the interface.