Shorebound Studios announces Dead Sky, a tower defense/zombie shooter coming to Windows, OS X, and Linux later this year as the next project from the Spectraball developer. A new Dead Sky website is online, offering a gameplay trailer, and we also have some screenshots. The game also has a Facebook page and a Steam Greenlight campaign. That's pretty much it for now except for this feature list:

• Wide-Ranging Single Player - Play through the expansive single-player mode, taking on zombies, gunning from choppers, and much more in 9 missions.
• Cooperative Multiplayer - Take yourself and up to three friends into a hectic, horde based, multiplayer game. Survive as long as you can, crafting your defensive base and fighting the zombie horde.
• 30+ Weapons, Zombies and Powerups - Dead Sky features many unique weapons, zombies and powerups for you to come across.
  Expansive Crafting System - Craft a variety of defensive items ranging from turrets, traps, barricades and more to enhance your base as you fight off the horde.
• Online Leaderboards - Compete with your friends and other players worldwide to see how you rank.