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Valve Software today announced the release of an update to Left 4 Dead that brings Mac support to the popular game, which now joins Left 4 Dead 2 on the Mac following the sequel's release earlier this month.
Valve had noted when it announced the Left 4 Dead 2 launch date that the original game was seeing a few delays but that they hoped it would be available before Halloween, a target the company met with today's release.
As a promotion coinciding with the Mac release, Valve is offering 50% discounts on several Left 4 Dead packages: single license ($9.99), four-pack ($29.99), and Left 4 Dead/Left 4 Dead 2 bundle ($14.99). As with all of Valve's other Mac releases, the Steam Play functionality allows users to purchase each game only once, yet still play them on multiple platforms.