Version 3.3 Patch Notes

Version 3.0 Patch Notes

Version 2.5 Patch Notes

Version 2.4 Patch Notes

Version 2.3 Patch Notes

Version 2.2 Patch Notes

Version 2.1 Patch Notes

Version 2.0 Patch Notes

Version 1.9 Released

Version 1.8 Released (New "Part" System)

Version 1.7 Patch Notes (GameMaps Exclusive)

Version 1.6 Patch Notes

Version 1.5 Patch Notes

Version 1.4 Released

Version 1.3 Patch Notes

Left 4 Dead 1 Beta Pack Patch Notes (L4DMaps Exclusive)

Version 1.0 Patch Notes - Steam Workshop Release

Version 0.9 Patch Notes

Version 0.8 Patch Notes

Left 4 Dead 2 Beta Pack Released (Version 0.7)