http://www.rfactor.net/
rFactor is the next game from Image Space Incorporated (ISI), The makers of Sports Car GT, and the F1 series for PC. They have always been good at keeping their games open to modding, which resulted in some great mods like ETCC, Prototype-C, RSDG's Sports Car Challenge, V8 Supercars and eventually the commerical release of GTR FIA GT Racing by Simbin.
rFactor is the next step for ISI. They have completely revamped the graphics engine, physics, and multiplayer code from the ground up, but have kept the architecture open to modding. Instead of going with a real-life racing series or tracks, they have opted to create fictional cars and tracks that closely resemble real-world counterparts. Everything from touring cars, to GT class endurance sports cars, to open wheel cars (Forumla 1 and F3000).
They released a multiplayer test demo back at the end of 2004 that was pretty promising, but from the reviews that are coming out now, it does not remotely do justice to the final game.
There is a great review in the August 2005 issue of AutosimSport by some well known members of the racing sim community.
Basically they say it is the next Grand Prix Legends and that the multiplayer code is tight and the physics, sense of speed, and feel are the best to date of any racing sim. I normally would be skeptical of such overwhelming praise, but these guys have been around for a long time and I trust their opinions. Check it out here:
http://www.autosimsport.com/
rFactor should be available for download and purchase sometime this week. It is a download only product, pay by credit card or paypal.
http://www.rfactor.net/
Here is the feature list:
Templates and Car Viewers for painting your own ride are already available here:Physics
Updated 15 degrees of freedom physics engine
Advanced tire modeling
Support for 4-link rear suspension
Engine boost modeling
Complex aerodynamics
Head physics, cockpit vibrations, detailed bump modeling
All-new track-specific terrain data file system
Graphics/Sound
DX9 advanced graphics engine
Real-time day/night transitions
Projected headlights for nighttime driving
Adjust player and opponent volume ratio
See the apex with the Look Ahead slider
Adjust your seat and mirror while in the driver's seat
Updating real-time scoring towers
Expanded and enhanced gauge and LCD features for vehicle cockpits
Improved loading times
Updated sound engine
Changing engine sounds based on upgraded vehicle performance
Gameplay
Career mode with upgrades that affect the vehicle's appearance, performance, and sound
Define AI opponent types, strength and aggression
Races can be lap based, time based or both
Vehicle upgrade system
Vehicle economy including mileage
Ambient and track temperature changes throughout the race
More configurable keys than you can shake a stick at
Multiple Racing Series with vehicle and circuit filters
Grid editing
Camera/Replays
Full screen monitor and ability to rewind
Freely move camera from any position including the ever famous exclusive ISI Swingman
Spectator mode
Greatly enhanced replay system including clip splicing
Move, duplicate or delete replay clips while assigning camera movements to each
Export replays to AVI files defining compression and size options
Multiplayer
Completely new multiplayer engine
Built in race statistics reporting to web based RaceCast system
Built in friends list
Server bookmarks
Dedicated server, including single click option
Native voting system
Add AI to multiplayer games
Built in IRC chat
Boot and ban player lists that can be passed around
Security checks to combat potential cheating
RaceCast
Join or watch any race from RaceCast
Search through past races
Downloadable XML race results
Driver profiles with statistics
rRank formula utilizing a wide range of driver statistics
See who's online and on what server
Open Architecture
Extensive support for modders
Easy to use customizable multi-language support
Define a league schedule
Rules to simulate different types of racing
Completely customize your controller
Drop in new vehicle liveries
http://www.rfactor.net/index.php?page=downloads
http://ringracing.com/