The sequel to one of the most popular competitive PC games of all time, Counter-Strike, will arrive on the same day for both Mac and Windows when it launches later this year: August 21.

Counter-Strike: Global Offensive will arrive on OS X as well as Windows, PlayStation Network and Xbox Live Arcade for $15, developer Valve announced on Monday. The new Counter-Strike will be made available for sale through Valve's Steam platform on both Mac and Windows.

The sequel to Counter-Strike features new maps, characters and weapons, and also delivers updated versions of classic Counter-Strike content like the map "de_dust." Global Offensive will also introduce new gameplay modes, matchmaking, leaderboards and more.

Counter-Strike: Global Offensive was developed by Valve in cooperation with Seattle-based Hidden Path Entertainment. It is playable at this week's Electronics Entertainment Expo in Los Angeles, Calif.

Valve first announced last August that Counter-Strike: Global Offensive would debut on Apple's Mac platform alongside Windows. The original Counter-Strike and an updated version using Valve's "Source" engine remains one of the most popular online games nearly 13 years after it launched in 1999.

Games for Mac received a major shot in the arm in 2010, when Valve launched its Steam platform on OS X. Among the titles that came to the Mac on Steam was Counter-Strike: Source, as well as Team Fortress 2, Portal, and the Half-Life series.

Apple also hopes to improve the gaming experience on Mac with the launch of OS X 10.8 Mountain Lion this summer. With Mountain Lion, gamers will be able to play cross-platform titles online between Mac and iOS, thanks to the arrival of Game Center on Mac.