Yesterday, we announced that Steam and all our Source engine games will be coming to the Mac. Sound too good to be true? Well, guess what: It is true! There are no catches! Sometimes life actually works like that. The bad news is that we've just truth bombed your hard-earned lie detector back to the stone age, and you'll probably lose all your money to the next international lottery scam that sneaks through your spam filter. Still, Steam on the Mac!



Since we're getting a lot of email asking the same basic questions, we figured we'd just answer them here:



Q: I own TF2 on the PC. Do I have to buy it again on the Mac?

A: No. If you own TF2 on the PC, you own TF2 on the Mac (and vice versa). You don't have to buy the game twice. In addition, the Steam Cloud will automatically propagate your configuration settings and custom sprays to your Mac for you.



Q: Is it just some crappy emulated version of TF2?

A: No! Also: How dare you! Mac users aren't getting a crappy emulated version of the game. TF2 will run natively on OSX, like an actual big boy game for adults.



Q: Hmm, that all sounds pretty good. But I'll bet I can't play with my friends who own Macs if I'm on my PC.

A: Mac and PC users will all play together, on the same servers. We're not creating two separate universes. We're all going to be one big, happy family with guns locked in a bloody, never-ending struggle for cap points.

Left 4 Dead 1 and 2 are coming to the Mac!



We like the platform wars in the forums so much that we've decided to add a new platform to the fray. Later this spring, we'll be releasing both Left 4 Dead 1 and 2 on the OSX operating system for Mac computers, all through Steam.







Steam on the Mac will behave just like Steam for Windows, but through Steam Play will add cross-platform ownership. That means if you own Left 4 Dead 2 for Windows, then you already own it for the Mac. There's no need to buy it twice! Unless you want to buy it twice, in which case, as long as you're feeling so generous, why not buy it five times?



Plus, Mac and Windows players can go head-to-head, since both Left 4 Deads are cross-platform compatible. Mac owners can even host their own servers and create their own maps, just like Windows users.



The Mac Versions of L4D1 and 2 don't run under emulation software but in native code. That's technical talk for how cool your friends will think you are with your five copies of Left 4 Dead 2 for the Mac.



We'll be releasing the exact system requirements soon. The Mac versions will be updated in sync with the Windows versions, so the platform wars can continue uninterrupted.



Even though Left 4 Dead 2 is the only game you'll ever need on any platform, as a purely academic exercise, you should probably check out the complete catalog of games available on the Mac when the Steam client is released in a few weeks.

Leading Gaming Service Expands to Mac Platform

Valve announced today it will bring Steam, Valve's gaming service, and Source, Valve's gaming engine, to the Mac.

Steam and Valve's library of games including Left 4 Dead 2, Team Fortress 2, Counter-Strike, Portal, and the Half-Life series will be available in April.

"As we transition from entertainment as a product to entertainment as a service, customers and developers need open, high-quality Internet clients," said Gabe Newell, President of Valve. "The Mac is a great platform for entertainment services."

"Our Steam partners, who are delivering over a thousand games to 25 million Steam clients, are very excited about adding support for the Mac," said Jason Holtman, Director of Business Development at Valve. "Steamworks for the Mac supports all of the Steamworks APIs, and we have added a new feature, called Steam Play, which allows customers who purchase the product for the Mac or Windows to play on the other platform free of charge. For example, Steam Play, in combination with the Steam Cloud, allows a gamer playing on their work PC to go home and pick up playing the same game at the same point on their home Mac. We expect most developers and publishers to take advantage of Steam Play."

"We looked at a variety of methods to get our games onto the Mac and in the end decided to go with native versions rather than emulation," said John Cook, Director of Steam Development. "The inclusion of WebKit into Steam, and of OpenGL into Source gives us a lot of flexibility in how we move these technologies forward. We are treating the Mac as a tier-1 platform so all of our future games will release simultaneously on Windows, Mac, and the Xbox 360. Updates for the Mac will be available simultaneously with the Windows updates. Furthermore, Mac and Windows players will be part of the same multiplayer universe, sharing servers, lobbies, and so forth. We fully support a heterogeneous mix of servers and clients. The first Mac Steam client will be the new generation currently in beta testing on Windows."

Portal 2 will be Valve's first simultaneous release for Mac and Windows. "Checking in code produces a PC build and Mac build at the same time, automatically, so the two platforms are perfectly in lock-step," said Josh Weier, Portal 2 Project Lead. "We're always playing a native version on the Mac right alongside the PC. This makes it very easy for us and for anyone using Source to do game development for the Mac."

Support for the Mac in Source and Steamworks is available to third parties immediately. Interested developers should contact Jason Holtman at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Valve announced today it will bring Steam, Valve's gaming service, and Source, Valve's gaming engine, to the Mac.

Steam and Valve's library of games including Left 4 Dead 2, Team Fortress 2, Counter-Strike, Portal, and the Half-Life series will be available in April.

"As we transition from entertainment as a product to entertainment as a service, customers and developers need open, high-quality Internet clients," said Gabe Newell, President of Valve. "The Mac is a great platform for entertainment services."

"Our Steam partners, who are delivering over a thousand games to 25 million Steam clients, are very excited about adding support for the Mac," said Jason Holtman, Director of Business Development at Valve. "Steamworks for the Mac supports all of the Steamworks APIs, and we have added a new feature, called Steam Play, which allows customers who purchase the product for the Mac or Windows to play on the other platform free of charge. For example, Steam Play, in combination with the Steam Cloud, allows a gamer playing on their work PC to go home and pick up playing the same game at the same point on their home Mac. We expect most developers and publishers to take advantage of Steam Play."

"We looked at a variety of methods to get our games onto the Mac and in the end decided to go with native versions rather than emulation," said John Cook, Director of Steam Development. "The inclusion of WebKit into Steam, and of OpenGL into Source gives us a lot of flexibility in how we move these technologies forward. We are treating the Mac as a tier-1 platform so all of our future games will release simultaneously on Windows, Mac, and the Xbox 360. Updates for the Mac will be available simultaneously with the Windows updates. Furthermore, Mac and Windows players will be part of the same multiplayer universe, sharing servers, lobbies, and so forth. We fully support a heterogeneous mix of servers and clients. The first Mac Steam client will be the new generation currently in beta testing on Windows."

Portal 2 will be Valve's first simultaneous release for Mac and Windows. "Checking in code produces a PC build and Mac build at the same time, automatically, so the two platforms are perfectly in lock-step," said Josh Weier, Portal 2 Project Lead. "We're always playing a native version on the Mac right alongside the PC. This makes it very easy for us and for anyone using Source to do game development for the Mac."


Support for the Mac in Source and Steamworks is available to third parties immediately. Interested developers should contact Jason Holtman at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Leading Gaming Service Expands to Mac Platform

March 8, 2010 - Valve announced today it will bring Steam, Valve's gaming service, and Source, Valve's gaming engine, to the Mac.

Steam and Valve's library of games including Left 4 Dead 2, Team Fortress 2, Counter-Strike, Portal, and the Half-Life series will be available in April.

"As we transition from entertainment as a product to entertainment as a service, customers and developers need open, high-quality Internet clients," said Gabe Newell, President of Valve. "The Mac is a great platform for entertainment services."

"Our Steam partners, who are delivering over a thousand games to 25 million Steam clients, are very excited about adding support for the Mac," said Jason Holtman, Director of Business Development at Valve. "Steamworks for the Mac supports all of the Steamworks APIs, and we have added a new feature, called Steam Play, which allows customers who purchase the product for the Mac or Windows to play on the other platform free of charge. For example, Steam Play, in combination with the Steam Cloud, allows a gamer playing on their work PC to go home and pick up playing the same game at the same point on their home Mac. We expect most developers and publishers to take advantage of Steam Play."

"We looked at a variety of methods to get our games onto the Mac and in the end decided to go with native versions rather than emulation," said John Cook, Director of Steam Development. "The inclusion of WebKit into Steam, and of OpenGL into Source gives us a lot of flexibility in how we move these technologies forward. We are treating the Mac as a tier-1 platform so all of our future games will release simultaneously on Windows, Mac, and the Xbox 360. Updates for the Mac will be available simultaneously with the Windows updates. Furthermore, Mac and Windows players will be part of the same multiplayer universe, sharing servers, lobbies, and so forth. We fully support a heterogeneous mix of servers and clients. The first Mac Steam client will be the new generation currently in beta testing on Windows."

Portal 2 will be Valve's first simultaneous release for Mac and Windows. "Checking in code produces a PC build and Mac build at the same time, automatically, so the two platforms are perfectly in lock-step," said Josh Weier, Portal 2 Project Lead. "We're always playing a native version on the Mac right alongside the PC. This makes it very easy for us and for anyone using Source to do game development for the Mac."


Support for the Mac in Source and Steamworks is available to third parties immediately. Interested developers should contact Jason Holtman at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

About Steam
The leading online service for games and digital entertainment, Steam delivers new releases and online services to over 25 million gamers around the world. For more information, please visit www.steampowered.com.

About Steamworks
The Steamworks suite of publishing and development tools include product key authentication, copy protection, auto-updating, social networking, matchmaking, anti-cheat technology, and more. The features and services available in Steamworks are offered free of charge and may be used for both electronic and tangible versions of games. For more information, please visit www.steampowered.com/steamworks.