To put this into a bit more perspective - we're talking about 5 MByte worth of source code changes (and this doesn't even include new code) from UT2003 v2225 to the current UT2004 code tree... It's actually quite scary to see how much has changed. We are now at version 3053 which means we had over 800 internal builds since the last UT2003 patch thus far.

Anyone familiar with merging and backporting code will know the dependency game where one tiny feature you want to port will have a dependency on another which then will have a dependency on yet another feature and so on till you realize that to backport it you either had to rewrite it in the old codebase or literally backport everything.

AFAICT Unreal -> Unreal Tournament had fewer code changes than Unreal Tournament 2003 -> Unreal Tournament 2004.

Daniel, Epic Games Inc.