Valve and PopCap Games have today announced a Game of the Year Edition of Plants vs. Zombies is now available to download on Steam. The GOTY Edition adds support for Steam Cloud, which allows players to save and access saved games from any computer. It also adds the Zombatar, which gives players the ability to add their own custom zombie creations straight into the game.

PC versions of the original game of Steam will be updated to include these new features. The game was also released on the Mac today via Steam with both Steam Cloud and Steam Achievements. PC gamers can use Steam Play to play the game on any Mac now too.

“Delivering Plants vs. Zombies via Steam helped us reach a tremendous audience for the game,” said Ron Powers, VP of Product Management at PopCap. “Adding Steam Cloud functionality to the game allows us to increase the value of the title to existing and new customers. In addition, with the title support Steam Play for cross platform play, it seemed the timing was perfect for adding Steam Cloud support.”