Valve release Steam for Mac, includes free Portal

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As promised, Valve have just announced that the debut Mac version of their digital download game platform Steam is now available, alongside a batch of nearly 60 games, including a free download of Valve's own Portal (through May 24th).

While the selection of AAA 3D titles is more limited than its Windows counterpart for now, it does include good representation from the adventure game set, like LucasArts and Telltale, and by the indies, including Braid and a discount 5-pack of World of Goo, And Yet It Moves, Galcon Fusion, Osmos and Machinarium.

Also, "Steamplay" titles previously bought through the Windows version of the client are automatically activated in your new Mac account -- the company promises more of those every Wednesday through the coming months. Download the client here [.dmg link], and see Valve's Mac section here.

Click through for the full list of launch titles.

And Yet It Moves
Atlantis Sky Patrol
Bejeweled 2 Deluxe
Bob Came in Pieces
Bookworm Deluxe
Braid
Brainpipe
Chocolatier: Decadence by Design
Chuzzle Deluxe
City of Heroes: Architect Edition
Civilization IV: The Complete Edition
Cooking Dash
Diaper Dash
The Dig
Diner Dash: Hometown Hero
DinerTown Detective Agency
DinerTown Tycoon
Dream Chronicles: The Chosen Child
Escape Rosecliff Island
Fairway Solitaire
Fitness Dash
Football Manager 10
Galcon Fusion
Gemini Lost
Guns of Icarus
Hotel Dash Suite Success
Indiana Jones and the Fate of Atlantis
Indiana Jones and the Last Crusade
KrissX
Loom
Luxor
Luxor 3
Luxor: Mahjong
Machinarium
Mahjong Roadshow
Max and the Magic Marker
My Tribe
The Nightshift Code
Nightshift Legacy: The Jaguar's Eye
Parking Dash
Peggle Deluxe
Peggle Nights
Portal
Professor Fizzwizzle and the Molten Mystery
Quantz
Sam & Max: The Devil's Playhouse
Tales of Monkey Island Season 1
Toki Tori
Torchlight
Trijinx: A Kristine Kross Mystery
Unwell Mel
Valarie Porter and the Scarlett Scandal
Wandering Willows
Wedding Dash 2: Rings Around the World
World of Goo
Zenerchi
Zuma Deluxe