The SnarkPit crew is currently working on the 2008 compilation map project. Our goal is to get different maps from people and combine them together to form a community-built HL2 DM level. Each map is created specifically for this purpose.
Because it is a community map, anyone can submit their own! All you have to do is build your map based on
these guidelines. -Just read the rules and explanation and you should be good to go! If you have any questions, simply post them in the thread linked below.
Check out the
compilation map's progress here.