The downloadable version Penumbra Collection is on sale right now at Amazon.com for $2.50. This includes Penumbra Overture, Penumbra Black Plague, and Requiem Expansion Pack.

http://www.amazon.com/1C-40294Penumbra-C...d_sim_vg_8

Also, Steam has Amnesia: The Dark Descent, a game similar to Penumbra that is made by the same company, for 50% off right now.

http://store.steampowered.com/app/57300/

Penumbra hm, its ok.
But Amnesia... delicious, obviously only in the night.

Just bought Amnesia: The Dark Descent. Steam has it for 66% off now. The sale likely ends today though.

http://store.steampowered.com/app/57300/

• Humble Frozenbyte Bundle: Pay what you want for 4 games made by Frozenbyte - including Trine, Shadowgrounds: Survivor, Shadowgrounds, and Splot.
• Portal 2 is releasing April 19th. You can pre-order it for 10% off on Steam.
• Brink is releasing May 10th. You can pre-order it and get 4 exclusive items on Steam.
  

you should note that the Humble Frozenbyte bundle gives the source code to shadowgrounds and shadowgrounds survivor and the prototype game they was developing at some point jack claw, while not allowed to sell the modified code builds, you could possibly learn something that can be used for your game. ; )

I also got Metro 2033 at 50% off.

It's a fantastic game! I can recommend it to anyone who has but the slightest interest in post-apocalyptic settings.
Also, it's a great example on how you could design your levels. Much kudos to everyone who worked on that game.

"Brink is an immersive first-person shooter that blends single-player, co-op, and multiplayer gameplay into one seamless experience, allowing you to develop your character whether playing alone, with your friends, or against others online. You decide the combat role you want to assume in the world of Brink as you fight to save yourself and mankind's last refuge. Brink offers a compelling mix of dynamic battlefields, extensive customization options, and an innovative control system that will keep you coming back for more." - Brink Official Site

Pre-order from Direct2Drive and receive 25% off using the promo code "sizzle". That's a $12.49 savings!

Releases May 10th, so hurry if you want to get the sweet savings!

i switched to playing free browser games some time ago to save some money... there are really good ones like battlestar galactica online or soccerstar! i also like the mmo part.

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Company of Heroes Complete Pack ($9.99 @ 80% off)

Delivering a visceral WWII gaming experience, Company of Heroes redefines real time strategy gaming by bringing the sacrifice of heroic soldiers, war-ravaged environments, and dynamic battlefields to life. Beginning with the D-Day Invasion of Normandy, players lead squads of Allied soldiers into battle against the German war machine through some of the most pivotal battles of WWII. Through a rich single player campaign, players experience the cinematic intensity and bravery of ordinary soldiers thrust into extraordinary events.

• A Cinematic Single Player Experience that captures the turmoil of WWII as never before.
• Advanced squad AI brings your soldiers to life as they interact with the changing environment, take cover, and execute advanced squad tactics to eliminate all enemy opposition.
• Stunning Visuals - Relic's next generation cutting-edge engine provides graphic quality and a physics driven world that is unprecedented in an RTS.
• Environmental Strategy - Real-time physics and a completely destructible environment guarantee no two battles ever play out in the same way. Destroy anything and re-shape the battlefield! Use buildings and terrain to your advantage, or deny them to the enemy.
• 2-8 Player Multiplayer Competition via LAN or Internet - Go online with friends and join the ultimate battle of Axis versus Allies.
  

Available until Monday 10 AM Pacific Time on Steam: http://store.steampowered.com/app/4560