Users can play "Word Bubbles Rising" on the Lumosity brain training program website. Lumosity offers a free, basic membership that gives users access to a limited number of games and features, and a subscription membership for full access to all games, training exercises and tools.
"Word Bubbles Rising," released on Lumosity on June 30, 2010, is a sequel to "Word Bubbles," which was released in 2007. The game supplies the player with three letters, and she must write words that begin with these letters. A bubble corresponding to the number of letters in the word rises. When a bubble breaks the surface of the water it becomes a star and earns the player additional points. When the game is over, the program displays the player's score and how much her verbal fluency has gone up or down.