TRS's last Left4Dead campaign that was never finished, along with a couple survival maps that never shipped. Dam It stitches Dead Air and Blood Harvest together.
Automatic Install: unzip .vpk file and double click to launch.
Manual Install: unzip .vpk file and copy to Left 4 Dead 'addons' folder.
Releasing as an add-on means that our code changes are not included. Missing code means that the following features are not working:
The burning forest section has a burn trigger that stays on too long. If you move quickly you'll take burn damage.
The dam spawn room is missing health kits and weapons.
The elevator models have an offset origin in the dam. Players can still get on and use them, but they are invisible and wall collision is missing.