v0.51
- Added fire extinguishers and first aid stations.
- Tweaked fog and color correction settings.
- Balanced infected spawning in events.
- Added more hints.
- Added more spawnable items.
- Added more crates in the warehouse puzzle.
- Fixed sniper scopes not being usable in the first map.

- Replaced the barricade event.
- You can no longer cheat yourself out of a finale by getting into the elevator.
- Even more easter eggs.
- Survivor bots are now forced to enter the ventroom elevator.
- Items from the second map now get transferred to the third map correctly.
- Added more custom props.
- Added alternate events.
- Catwalks that actually go somewhere.
- Fixed water reflectivity.
- Added more uses for the survey meter.
- Improved lighting.
- Fully featured meth lab!
- Radiation no longer affects the gods.
- More versus fixes, including different events.
- Fixed instructor hints only being visible for one player.
- added some more explorable areas (still WIP).
- You can now push the trailer doors with the use key.
- Made it easier to see what you need to do in some of the events.
- And much more...

v0.4
- Added more easter eggs.
- Significantly improved survivor bot nav.
- Added faster teleport.
- Added some custom props.
- Bots now try to save themselves from explosive situations.
- Added new scene to escape.
- Improved lighting and color correction.
- Replaced frame rate dropping bushes.
- More subtle radiation effects.
- Lots of misc. versus fixes.
- And more.