Play Altitude FREE this weekend but why stop there? Make it yours at 50% off the regular price. Sale ends on Monday, September 6th - don't miss it! Updates to Altitude have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include: Updated Maps: tbd_asteroids tbd_underpark Balance: Reverse Thrust - increased accel... more.

Added "Offline Mode" for convenient access to training and skirmish modes when playing without an internet connection New mouse control configurations available under Options -> Controls -> Mouse Navigation: Turning and Throttle -- control orientation and throttle using the mouse (default) Turning Only -- control orientation with the mouse and throttle with the keyboard (best ... more.

According to the accounts of many happy Mac gamers, last week's launch of Steam on the Mac has been a huge success. Those of us on the Steam team were especially pleased to be able to include Portal as a free download to celebrate the launch, and it appears that many of you agree it was a good idea - there have been approximately 1.5 million downloads so far. Aperture Science, we've heard, is... more.

Play the full game for free this weekend only! Featuring cross-platform multiplayer, you can now play Altitude against PC and Mac foes alike. If you already have Steam, click here to start installing Altitude now. Need Steam? Click here. Plus, save 50% when you buy Altitude before Monday.... more.

Cross-Platform Multiplayer Titles Available Now The second round of Steam for the Mac launch titles are available now. This week's collection features a dozen games headlined by the first cross-platform multiplayer games offered via Steam. This first set of titles that allow for PC vs. Mac cross-platform gaming include the co-op zombie hit Killing Floor, Altitude, and Madballs in Babo I... more.

Updates to Altitude have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include: New Maps: Added tbd_underpark (thanks Mandrad) Updated tbd_cave Balance: Biplane (All Forms) increased turning rate by 1.5% (6.5 -> 6.6) Biplane (Dogfighter, Recoilless) increased primary weapon ejection velocity (17 -> 19, n... more.

Updates to Altitude have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include: Added "Ace" System: Upon reaching level 60, players can click a button under Hangar Deck -> Stats to become an Ace. When you become an Ace you will start over at level 1 with unlocks and challenges reset. There are no gameplay adva... more.