Bookworm challenges players to find words in a randomized tablet of letters, while Bejeweled Twist has players matching three or more blocks of the same color.

In addition, PopCap VP Greg Canessa teased the company's new original PC game, Plants vs. Zombies, describing it as a combination of "the real-time strategy genre, the tower defense games and collectible card games--but in a casual context."

Plants vs. Zombies is due out later this year. And while the description may sound a little confusing, to say the least, Forbes writer Chris Morris points out PopCap has a knack for such things. After all, the ball-bouncing bliss of Peggle could be described as a combination of "pachinko, gravitational physics, pinball, geometry and cartoon animals."