Shack PSA: World of Goo 75% Off; New 99 Cent Title on Games for Windows Everyday Until Dec. 8

While we've already let you know that the Deus Ex: Game of the Year Edition is available on the Games for Windows Marketplace today for 99 cents, Microsoft has more deals planned for the next seven days.

Starting today and running until December 8, a new 99 cent game will be featured everyday on the Games for Windows store, Microsoft announced in a press release. Additionally--also running until December 8--gamers can purchase a copy of World of Goo for $4.99 (75% off), as part of the site's "Deal of the Week" promotion. As an added bonus for purchasing the fantastic title, players can unlock Achievements for their Xbox Live/GFW account--presumably to show off their goo-management prowess.

Each daily deal runs until 8:30am PT the following day. Stay tuned tomorrow for another 99 cent special during Microsoft's new promotion.