Once again, the weekend is upon us, meaning that, once again, various digital distribution outlets have discounted some downloadable PC and Mac games.

Portal and Sam & Max Season Three: The Devil's Playhouse

This weekend marks your last chance to get a free copy of Portal on PC and Mac, with several other tantalizing offers making the rounds as well. Check 'em out:

$49.95 (Roughly 50% Off)$12.57 (30% Off)

Steam
• • Altitude [PC/Mac] - $4.99 (50% Off, Free Multiplayer Weekend)
  • Football Manager 2010 [PC/Mac] - $19.99 (50% Off, Free-to-Play This Weekend)
  • Killing Floor [PC/Mac] - $13.39 (33% Off)
  • Madballs in Babo:Invasion [PC/Mac] - $4.99 (50% Off)
  • Madballs S.W.A.T. Pack [PC/Mac] - $9.04 (33% Off)
  • Portal [PC/Mac] - Free
  • SEGA Complete Steam Pack - $89.99 (76% Off)
  • Telltale Steam Play Pack 2 [PC/Mac] - $49.99 (56% Off)
    • Tales of Monkey Island Complete Pack
    • Sam & Max Season Two: Beyond Time and Space Complete Pack
    • Sam & Max Season Three: The Devil's Playhouse Complete Pack
  • QuantZ [PC/Mac] - $3.00 (70% Off)

Direct2Drive
• • Bob Came in Pieces [PC] - $4.95 (50% Off)
  • Empire: Total War [PC] - $10.50 (65% Off)
  • Westward Value Pack [PC] - $7.50 (50% Off)
    • Westward I
    • Westward II
    • Westward III: Gold Rush

Impulse
• • Bob Came in Pieces [PC] - $4.99 (50% Off)
  • Call of Juarez: Bound in Blood [PC] - $9.99 (50% Off)
  • Demigod [PC] - $9.99 (50% Off)
  • Eschalon Book II - $19.95 (25% Off)
  • For The Glory: A Europa Universalis Game [PC] - $7.99 (60% Off)
  • Galactic Civilizations II: Ultimate Edition [PC] - $9.99 (75% Off)
  • Juiced 2: Hot Import Nights [PC] - $9.99 (30% Off)
  • Mass Effect 2 - $37.46 (25% Off)
  • Sins of a Solar Empire [PC] - $9.99 (50% Off)
  • S.T.A.L.K.E.R.: Call of Pripyat Loyalty Edition [PC] - $11.99 (40% Off)

Telltale Games
• Sam & Max Complete Collection -
  • • Sam & Max Season One: Save the World [PC]
    • Sam & Max Season Two: Beyond Time and Space [PC/Mac]
    • Sam & Max Season Three: The Devil's Playhouse [PC/Mac]

Good Old Games
• Gabriel Knight Collection [Pc] -
  • • Gabriel Knight: Sins of the Fathers [PC] - $5.09 (15% Off)
    • Gabriel Knight 2: The Beast Within [PC] - $5.09 (15% Off)
    • Grabiel Knight 3: Blood of the Sacred, Blood of the Damned [PC] - $5.09 (15% Off)

GamersGate
• • Altitude [PC/Mac] - $4.97 (50% Off)
  • Arsenal of Democracy: A Hearts of Iron Game [PC] - $13.96 (30% Off)
  • Company of Heroes Complete Pack [PC] - $23.98 (60% Off)
    • Company of Heroes Gold [PC] - $11.98 (60% Off)
      • Company of Heroes [PC] - $7.98 (60% Off)
      • Company of Heroes: Opposing Fronts [PC] - $3.98 (60% Off)
    • Company of Heroes: Tales of Valor [PC] - $11.98 (60% Off)
  • FlatOut Bundle Pack [PC] - $19.92 (50% Off)
  • Football Manager 2010 [PC] - $19.97 (50% Off)
  • Max and the Magic Marker [PC/Mac] - $14.96 (25% Off)
  • Supreme Ruler 2020 Gold [PC] - $11.98 (60% Off)
  • Tropico 3 / Absolute Power Expansion Bundle [PC] - $30.14 (40% Off)
  • World War II: Time of Wrath [PC] - $15.00 (50% Off)