Dawn of Discovery Venice: Ubisoft releases this downloadable exclusive expansion pack to 2009's historical strategy-sim game. In addition to the expansion's Venice, Italy, new quests and new items setting the game adds multiplayer support to the main game. Ubisoft is also offering a Dawn of Discovery Gold edition with both the original game and the Venice expansion pack.
Order of War Challenge: This stand alone downloadable-only multiplayer expansion to Wargaming.net's 2009's WWII RTS game will add 12 new maps, six new multiplayer modes, four new co-op survival missions and more. People who already own the original Order of War game will get to download Order of War Challenge for free.

Achtung Panzer: Kharkov 1943: Developer Graviteam offers up this WWII strategy game that's being released via download from publisher Paradox Interactive. It centers on the Battle for Kharkov campaign and features destructible environments, real ballistics and more.
Arsenal of Democracy: Yep, its another WWII strategy game. This one from developer BL-Logic and publisher Paradox Interactive uses the Hearts of Iron II engine as its basis but with lots of new features and improvements. It's being offered as a downloadable only title.
Sonic and Sega All-Stars Racing: The PC version of this kart racing game from developer Sumo Digital and publisher Sega will be released as a PC download exclusive. Characters from the Sonic games race against other Sega branded characters in 27 tracks.