Defense Grid

Via HiddenPath Entertainment:

The first premium expansion pack for the award-winning Defense Grid: The Awakening comes to the Xbox 360 and PC this June in the form of Defense Grid: Resurgence: eight new highly polished and balanced maps from the original creators of the definitive tower defense game.

For four consecutive weeks starting on June 2nd, a new pair of maps will be released providing new environments and strategic experiences, requiring new ways of thinking to beat back the aliens and protect the cores.

Each map pack will cost $ 0.99 or 80 Microsoft Points and will include two maps each having a campaign mode and 4 challenge modes. Defense Grid: Resurgence will be available for the Xbox 360 on Xbox LIVE Arcade and for PC on Steam and Direct2Drive. All map packs support new achievements and new high-score leaderboards.