Weekend PC download deals: Aliens: Colonial Marines for $5

Remember how you sneered you'd buy Aliens: Colonial Marines when it was on sale for $5? It's on sale for $5. Go on then: buy it. I'll hold you to that. Look, you know you're curious. Actual bargains worth buying include all three Thief games for $6, Natural Selection 2 for $6, Dark Souls for $8, XCOM: Enemy Unknown plus its DLC for $10, Civ V: Brave New World for $15, BioShock Infinite for $20. Here's our selection of this weekend's PC deals:

GameFly Digital

Call of Duty: Black Ops II

Amazon

Amazon's big Late Summer Sale includes:

BioShock Infinite

Bundle Stars

Pay $4.99 for AirBuccaneers, Chaser, Dogfight 1942, Genesis Rising, Men of War: Condemned Heroes, Numen: Contest of Heroes, Pid, Really Big Sky, Sniper: Ghost Warrior Gold, and Tower Wars. All activate on Steam.

Pid

GamersGate

Friday:

Kingdoms of Amalur: Reckoning

GameStop

Dishonored

Get Games

Tomb Raider

GOG

Constructor

Green Man Gaming

You'll need to use the voucher code GMG25-R7GA8-XTUCY to get these prices:

Shelter

Humble Bundle

Pay what you want for Dungeonland, Europa Universalis III Complete, Leviathan: Warships, The Showdown Effect, War of the Roses: Kingmaker, and Warlock: Master of the Arcane. Beat the average price to get Crusader Kings II and Magicka too. Or pay $125 to get, good grief, 48 games published by Paradox. Steam keys come if you pay at least $1.

Crusader Kings II

Indie Royale

Pay what you want for ASA: A Space Adventure, "Beware Planet Earth!", Block Story, Bollywood Wannabe, Diadra Empty, Undead Legions, and a yet-unrevealed other game.

Diadra Empty

Steam

As well as being on sale all weekend, NS2 is free to play until 1pm PST on Sunday; click here to install it. Steam has a big Greenlight sale with loads more than I've included below.

Natural Selection 2

Ubisoft

Friday:

Just Cause 2