343 Industries has announced that, from now until April 12, Halo Week: Drop Shock , a week dedicated to content for Halo 4 that was inaugurated with the Castle Map Pack released today. We list the release program and offers in a week.

8 April -launch of Castle Map Pack, with three maps of large-medium designed to emphasize vehicular combat in space. The content also includes a new ranking system called CSR (Competitive Skill Rank).

April 9 -Volume Output 2 of the Original Soundtrack to Halo 4. It is a digital collection of 20 songs, including a new version of "Never Forget" of Halo 3. More information in this page .

10 April -During the whole Halo Week will take place different challenges to get extra XP. There will be 14 daily and weekly 6 challenges, and the XP extras can be earned by playing in all modes of Halo 4. For more information, check out this page from Thursday.

April 11 -day dedicated to Spartan Ops. Players who will play 5 missions in the Spartan Ops will receive a t-shirt Avatar.

12 April -it is the last day of the Week, and Halo of balances on the contents of Halo 4. This is only part of what we will be able to take advantage of offers:

• Halo 4 War Games Map Pass: 1600 Microsoft Points (instead of 2000 Microsoft Points)
• Crimson Map Pack: 600 Microsoft Points (instead of 800 Microsoft Points)
• Majestic Map Pack: 600 Microsoft Points (instead of 800 Microsoft Points)