of the exclusive features of the PlayStation 2 and PlayStation Portable versions were later implemented in Test Drive Unlimited 2. Multiplayer game The multiplayer component (branded as M.O.O.R. or Massively Open Online Racing) works as an extra layer on top of the single-player game: all activities available in single-player are also available in multiplayer. The following challenges are also available in multiplayer only: Race against other players Challenge players to complete tasks Attempt other player challenges Racing against other players works in freeride by using a custom geolocalized matchmaking system, added using Xbox Live Server Platform (XLSP). Multiplayer races spots are handled by using the player match/ranked match system employed by Xbox Live. The Microsoft Windows version uses the GameSpy network for authentication. It is also possible to create an immediate, ad hoc race against another player by flashing headlights at their vehicle. Players may create and join "clubs" which help organize player events. Vehicles may be traded between players through a central "clearing house"-style interface that lists the vehicles for sale along with class, mileage, specification, and price information. It is also possible to play online with the addition of a network adapter to a PlayStation 2 and via Infrastructure Mode on the PlayStation Portable. The server structure consisted of 11 individual machines working in a distributed, scalable way. The Xbox 360 and Microsoft Windows servers were shut down on 29 September 2012. The PlayStation 2 and PlayStation Portable servers were shut down on an earlier date. On 28 September 2014, community members launched a private server for the Microsoft Windows version of the game. Downloadable content Xbox 360 On the Xbox 360, new cars could be downloaded via Xbox Live, similar to Project Gotham Racing 3 and 4s Booster Packs and Midnight Club: Los Angeless South Central vehicle packs. Some individual cars were available to download for free, while others were paid purchases as part of a pack. All downloaded cars still need to be purchased with in-game money at their respective dealerships before they can be used in the game. There were eight car packs and eight free cars. There is also a downloadable mode called "hardcore mode" which makes the game experience more realistic. It was designed for players with an Xbox 360 Racing Wheel controller. The hardcore mode is free however in the Windows version, and can be unlocked by achieving a higher specific rank.