This week THQ is in the spotlight at Steam. There's going to be a different discount going each day.

Today, action role-playing game Titan Quest and its expansion Titan Quest - Immortal Throne are 50% off. The deal will return until tomorrow afternoon, when another THQ title will get its price cut. For the whole week, the THQ Collector Pack, which includes the Warhammer 40,000: Dawn of War and Company of Heroes series (among other things), will be 10% off.

There are twenty different THQ games and expansions offered through Steam currently. They've got all three Red Faction game so I'd suspect we'll see a deal for those before the week is out.