If you've missed the handful of other opportunities to snag Dishnored for about half off, here are two more: Amazon is offering the title for $30 and Greenman Gaming has it for $25. There's plenty to see elsewhere too, with Portal 2 set to $5 on Steam, FIFA 13 fetching $10 at Amazon...

Let's just get this out of the way: Yes, Quantum Conundrum is a first-person puzzler, just like Portal. Yes, it was designed by Kim Swift, the project lead on Portal. And yes, it shares some of Portal's core traits: there's a physics-altering arm device, a goofy omniscient narrator, and an alarming number of buttons that need to be pushed.

But Quantum Conundrum crawls out from its spiritual predecessor's mighty shadow and stands, triumphant, as a game that's unique, raw, and brilliant in many ways. Finally, Portal has a worthy rival.

If you didn't grab the Elder Scrolls bundle from GameStop last week, Steam offers 33% off Skyrim along with 66% off both Portal games and the Tropico franchise, as well as 80% off Company of Heroes Complete Pack (the sequel was announced this month, due in 2013). Meanwhile...

While the cake may be a lie, the fact that Valve is giving away free copies of Portal couldn’t be any more accurate. From now until September 20, Steam users can download and install either the PC or Mac version of the classic puzzle game.