The Windows version was essentially developed in conjunction with the Xbox version. We spent a good chunk of time at the beginning of the project syncing up assets and figuring out a build process that produced a new Xbox and PC version of the game every morning. We had the opportunity to ship the Xbox version in December (but keep the PC release until February as we originally announced), so we focused our efforts on the Xbox. The fellas who made this game used the PC version to test changes, so in many ways as we debugged the Xbox version, we were also fixing most of the bugs in the PC version which made the PC completion process post-December much easier.