Previously unseen achievements point to an updated release of tactics game Plants vs. Zombies that will introduce cooperative play.

Xbox360Achievements.org updated their list of achievements for the upcoming Live game to include mention of cooperative play.

An achievement named "ZFF's 4 Evr" is awarded when you "Bowl a winner with a friend in Co-Op Wall-Nut Bowling." Another achievement teases a competitive VS. mode.

Developer Games hasn't made any announcements regarding the version of the game in quite some time, though a press conference schedule for August 2 is likely meant for detailing the downloadable title.

By Tracy Erickson