Before he co-created the legendary Mac game Dark Castle -- long before he led development on the now-dominant Flash multimedia platform -- Jonathan Gay made a little black-and-white game called Airborne. The Macintosh was still in its infancy at this point, and Airborne was released more-or-less alongside the freeware Banzai!, but this did little to detract from Airborne's appeal.

The concept is simple: destroy the advancing tanks, planes, helicopters, and soldiers with your mortar or anti-aircraft gun before they reach your position. If someone gets close enough to shoot you, you lose -- presumably ending an admirable, or perhaps foolish, last stand against all odds to repel an invasion force. If you manage to defeat them all, a new wave arrives. There is no winning, just a staving off of the inevitable and a hope of setting a new high score.

Leading digital distribution platform Steam finally made its way to the Mac on May 12, with around 50 launch games. The Mac Steam library now includes 96 titles, including newly released ports of Half-Life 2, Torchlight, and Portal. Check out the MacScene community’s reaction here, here, and here, in addition to a Portal-specific thread here.

As proof of a drastically changing tech landscape, Apple’s market capitalisation surpassed that of Microsoft last week, making it the largest technology company in the world. This marks one of the most incredible turnarounds in any company’s history, with Apple having been all but dead back in 1997, when Steve Jobs returned as CEO. Don’t celebrate too soon, though, because the happy folks at Microsoft are still way ahead on revenue.

In exciting news for Amiga fans, a new emulator called PUAE has been released. PUAE merges Richard Drummond’s E-UAE 0.8.29 with the latest version of WinUAE, and is available for Unix-based platforms. You can download the latest version from here, or check out Ultimate Amiga for more information.