In a last ditch effort to rid itself of an alien infestation, Xbox LIVE Marketplace has gone price-cut crazy with four pieces of downloadable content available through the service, all of which are teeming and undulating with extraterrestrial activity.

This week, Xbox LIVE Gold members are able to purchase and download the following games and bits of content at reduced prices:

• Zeno Clash Ultimate Edition: 800 Microsoft Points (Usually 1200)
• Aliens vs Predator Swarm Map Pack: 400 Microsoft Points (Usually 560)
• Alien Breed Episode 1: 400 Microsoft points (Usually 800)
• Galaga Legions: 400 Microsoft Points (Usually 800)

These offers are only available for the next seven days (and, as usual, to Xbox LIVE Gold members).

Source: Major Nelson’s Blog