Valve has surprised fans once again by releasing a free game called “Alien Swarm”, a top down co-op shooter powered by the Source engine. You can find it on Steam here — the game will be released tomorrow. On top of that, Valve will release the entire code-base and mod-tools as well.

Steam isn’t the only one having a summer sale, THQ is as well. They’re offering Metro 2033 for just $12.50 and Red Faction: Guerilla at just $5. But that’s not all, the list below contains games at THQ’s online store which are a whopping 75% off.

• Company of Heroes
• Company of Heroes: Opposing Fronts
• Company of Heroes: Tales of Valor
• Company of Heroes Gold Edition
• Frontlines: Fuel of War
• Full Spectrum Warrior
• Full Spectrum Warrior: Ten Hammers
• Metro 2033
• Red Faction
• Red Faction 2
• Red Faction: Guerrilla
• S.T.A.L.K.E.R. Shadow of Chernobyl
• Saints Row 2
• Supreme Commander
• Supreme Commander: Forged Alliance
• Supreme Commander Gold Edition
• Titan Quest
• Titan Quest: Immortal Throne
• Titan Quest Gold Edition
• Warhammer 40,000: Dawn of War
• Warhammer 40,000: Dawn of War – Winter Assault
• Warhammer 40,000: Dawn of War – Dark Crusade
• Warhammer 40,000: Dawn of War – Soulstorm
• Warhammer 40,000: Dawn of War II
• Warhammer 40,000: Dawn of War – Chaos Rising

According to The Wall Street Journal, Blizzard’s StarCraft 2 comes with a price-tag of a whopping $100 million, costing just as much as Grand Theft Auto 4, the most expensive game ever made (at $100 million as well). But fear not, Activision-Blizzard expect the game to generate half a billion in profit — profit, not revenue. And that’s according to Activions CEO Bobby Kotick.

Activision brings the second Modern Warfare 2 map pack, called Resurgence. Just like the last one, it’s priced at a high $15, and includes 5 maps. And just like last time, two of those maps are remakes.

The two remakes are Vacant, a tight map with lots of close quarter combat, while the second remade map, Strike, is based on urban combat and offers a bit more wiggle room than Vacant. The two maps carry the feel and play style from MW1, and on a whole, they’re pretty much the same.

The new maps, are Fuel, Trailer Park and Carnival. Fuel seems to be the most balanced and fair one, as it’s basically split in two, one end for those seeking regular, tense combat, and the other for snipers to camp. Trailer Park, as its name suggests, is set in a trailer park of old, vacant homes, with lots of close quarter combat where your shotgun will be the most useful weapon. The lat map, Carnival, is set in Brazil and takes place at a carnival, and given the nature of the map, its a lot more colorful and interesting, and is especially more open than the other maps.

Overall, the Resurgence map pack is just like the other one: okay for MW2 junkies — the three new maps offer some variety and Carnival especially is a great addition. Bur for the average gamer, the Resurgence map pack is just overpriced for what it delivers.

Financial outfit Bloomberg reports that EA has revealed intentions of selling their 15% stake in their French rival Ubisoft, which are accompanied by a 25% voting share as well.

EA holds approximately 14 million shares and the total value of the shares is around 95 million Euro, or $120 million USD.

Nintendo’s Super Mario Galaxy 2 has been received with great reviews and fanfare, often getting perfect scores in the major publications. This has resulted in impressive sales, as the game surpassed 1 million copies sold in the US in just over a month. Of course, being a “Mario” game helped a lot.

Activision has released a new trailer of the upcoming remake of GoldenEye 007 which will be out on the Wii later this year.

The destructive shooter Breach, which garnered attention for it’s destructive environment, has been delayed until early next year. The game was supposed to be released on XBLA this summer, but Microsoft’s XBLA scheduled was apparently filled, so the game will first see release in January 2011.

We previously reported that most 3D games on the PS3 will be in 720p, and not it turns out that all games on the PS3 which feature 3D tech will be limited to 720p. It’s understandable, as on a technical level, 3D requires twice the amount of frames, so you end up with two 720p images, one for each eye. However, it seems silly to limit 3D games to 720p, as we’re sure some developers out there would be able to squeeze two, 1080p images out of the PS3. The PS3 is already capable of displaying 1080p 3D images, as 3D Blu-ray films will be watchable on the console later this year.

Capcom has announced a new Mega Man game, Mega Man Universe, which will be available on Xbox Live and PSN later this year. This time Mega Man will team up with several other Capcom characters, like Street Fighter’s Ryu and Ghosts & Goblins’ Arthur.