Important note about the 'modified game data' error:

If you receive this error it means that some of the game's 'secure' folders contain modified data or additional files not belonging there. As a remedy, please verify the game cache through Steam and/or delete any additional files (backup copies and such) you might have floating around in the game's data folders. If you have additional files and you don't remember where they are simply verifying the cache or reinstalling the game won't help, you need to delete the whole game folder and then reinstall.

And here's the change log:

Engine:

* Physics improvements, more realistic geometry dynamics.
* Implemented joint-based steering rack implementation.
* Improved visual damage accuracy and realism, cars now deform more like they're made of sheet metal instead of paper or plastic.
* Implemented ambient occlusion maps for vehicles.
* Resurrected ambient shadow for vehicles, now affected by visual damage.
* Resurrected low frequency ambient occlusion for scenes.
* Running Steam client is no longer needed for dedicated servers.
* Again reduced dedicated server CPU load on empty servers.
* Improved tire adhesion audio, now reacts to different tyre conditions.
* Implemented basic anti-hacking measures: The game now detects in case there are modified or additional files in sensitive data folders, excluding art. In case modded content is is detected leaderboards are disabled. Multiplayer requires that the server and clients have the same modified files.

IMPORTANT NOTE: If you're persistently receiving an error message about data mismatch and can't pinpoint the culprit, please delete the whole 'data' folder and verify data integrity via Steam.

Gameplay:

* Added a new game mode: Sprint Cup, consisting of 3 heats of 2 lap races.
* Added basic part durability mechanic: parts now wear with use, lowering performance.
* AI opponents are now picked based on player's car class.
* Added a set of new AI opponents with different cars.
* Enabled ABS & TCS helpers in multiplayer.
* Fixed team race lap position points awarding.
* Improve lost tire and damage tracking in replay.
* Improved gamepad controls.

Upgrading:

* Implemented a new (placeholder) upgrading menu.
* Added a whole host of new vehicle parts.
* Implemented a placeholder marketplace.

User Interface:

* Improved chat functionality.
* Added an alert when a multiplayer event is about to start.
* Implemented more accurate option sliders when using a controller.

Tracks:

* Added a new race track: Mixed 1.
* Added a new race track: Tarmac 2.
* Added a new derby track: Lawn Mower Derby.
* Improved replay cameras on all tracks.
* Improved AI behaviour on all tracks.
* Added sunset weather.

Vehicles:

* Added a new vehicle: Lawn Mower with rag doll driver.
* Updated tyre model.
* Improved vehicle setups.

No, these motherfuckers are not dead.
 
We're silent because we're not marketing guys and we prefer to work on the game instead of hanging around on the forum unless there's a specific reason for it, for example an update that we want to gather feedback of, and for that I apologize. I know it would make a lot of you guys happy if we could afford to spend more time here but it's taking time away from something else.
 
Among other things we're currently working on getting the game mode (mod?) support in shape for the planned single-player career, visual customization and server playlist rotation, to name a few. Next update will bring forth basic repair functionality and crew management as well as improved tire and suspensions setups. A new track is pretty far in development as well, and the first version is going to released in the next update. Not absolutely sure about a new car just yet, but we predict that it will not be in a presentable shape before the update, although it's always possible that we release a preview version of the car if it's 100% functional.

(937 Mo)
General:
•Implemented an experimental version of part repairing and crew mechanics.  
Note that in order to be able to repair you first need to recruit a crew by clicking the small crew button above the car's icon and then assign your newly-recruited crew to the car.  
•Added a new work-in-progress tarmac track.  
 
•Improved all suspension setups.  
•Added Racing and Rally tyres in addition to Standard ones.  
•Improved off-road surfaces, now they are either more slippery or slow down.  
•Improved clutch logic so it's now easier to get the car moving again after spinning out.  
•Improved gamepad controller.  
•Fixed frequent crashing when joining servers with lawn mowers.  
•Improved vehicle paint-job changing speed.  
•Improved game start-up time after system boot.  
•Fixed graphics settings resetting after system boot.  
•Excluded paint-job related files from data modification check.  
•Implemented new grass.  
•Alpha-to-coverage multisampling for foliage is now always enabled.  
•Removed festive stuff.  
 
Server:
•Added basic event rotation functionality for dedicated server.  
•Added an ability to log dedicated server's messages to a file.  
•Further reduced idle dedicated server CPU usage.  
•Dedicated server configuration is from now on read from server_config.cfg file which is not clobbered by Steam updates. The file is seeded from the old initial_server_config.cfg file.  

•Added a new car: Asian 1.  
•Improved shifting with sequential and H-shifter.  
•Added a button to automatically distribute all available repair points to parts that are in worst condition.  
•Reduced part wear rate.  
•Improved foliage.  
•Fixed mud surface, tweaked off-road surfaces.  
•Multiplayer race start should no longer get stuck if someone joins or timeouts during the last seconds.  
•Implemented a probable fix for the 64-bit version sometimes crashing when a large amount of (dynamic) tires activated.  
•Bots that are manually added now remain on the dedicated server after track rotation.  
•Increased server name length limit.  
•Improved HUD.

Update 2016-03-23
 
•Sandpit no longer crashes the dedicated server.  
•Added a button to quickly buy and install a replacement part for a given part slot.  
•A purchased part can be now automatically installed if it's compatible with the current car.  
•Added a confirmation popups when purchasing a part and recruiting a crew.  
•Cars now automatically drive to the pits after finishing the race instead of doing infinite laps (not yet on all tracks, though).  
•Race time is now calculated correctly for the elimination race winner.  
•It's now possible to click a button even if fast-forwarding in replay kills the frame rate.  
•Improved HUD player list team icon placement.  
•Updated some loading screen pictures.  
•Improved Asian 1.

Things to note:
• Provided tools allow exporting car models from 3ds Max and converting them to the game's format.  
• TGA to BMAP texture compiler is also provided for texture modding.  
• Use included BagEdit editor to modify car's parts and paramaters.  
• An example Wwise project and a guide for creating your own vehicle sounds can be found in tools/wreckfest_vehicle_audio_tools.zip.  
• Mod cars give no rewards and are not allowed on leaderboards.  
• You should not edit stuff inside the original 'data' folder, rather copy the files you want to edit to your mod folder.  
• Multiplayer requires that server and clients have the same mods enabled (though some things like car skins are excluded as before).  
• Dedicated server can also require mods by configuring mods=some_mod,other_mod.
 
Other changes and new stuff in the update:
• Parts no longer wear in multiplayer. As a consequence, multiplayer gives no crew experience and much less money reward.  
• Multiplayer now offers "rental cars" which cost nothing but also give no rewards at all.  
• You can now view server's welcome message before joining, in the server browser. Feel free to list your required mods there.  
• You can now bring your favorite car to the front of the list by clicking the star icon.  
• Added lobby context menu options to show Steam profile page and open Steam chat for selected player.  
• Fixed Asian 1 shadow.  
• Fixed derby scoring sometimes stopping.  
• Fixed incorrectly set aero drag/torque.