File extension Details of USA, RVPROJ, RFM, RXDATA, RBXM, ROM, RBXL, RUN, RGP

Name:	USA
File Type:	Unreal Saved Game File
Popularity:	3
Category:	game
File Description:	Game saved in Unreal or Unreal 2 first-person shooter games; saves the progress of the player and allows the game to be loaded from the point when the game was saved. Unreal allows up to nine games to be saved at one time; the save files are named "save0.usa" through "save8.usa" and are saved in the "Unreal\Save\" folder; quick saves are stored in "save9.usa;" references to the save files are stored in the "User.ini" file in the same directory.
Open Programs:	Mac OS Epic Games Unreal Windows Epic Games Unreal and Unreal II: The Awakening

Name:	RVPROJ
File Type:	RPG Maker VX Project File
Popularity:	3
Category:	game
File Description:	Game project created with RPG Maker VX, a role-playing game (RPG) development program; named "Game.rvproj" by default and saved in the game project folder along with the Game.exe file; contains links to game resources, including audio, data, and graphics files.
Open Programs:	Windows Enterbrain RPG Maker VX

Name:	RFM
File Type:	rFactor Modification File
Popularity:	3
Category:	game
File Description:	Mod file used for altering the car and track settings in rFactor, a 3D race simulation game; saved in a text format that can be modified with a text editor; users can change the values of parameters in the RFM file to modify the gameplay.
Open Programs:	Windows Image Space rFactor Edit with a text editor

Name:	RXDATA
File Type:	RMXP Data File
Popularity:	3
Category:	game
File Description:	Role Playing Game (RPG) data file created by RPG Maker XP, a software development program for creating original role-playing games
Open Programs:	Windows Enterbrain RPG Maker XP (RMXP)

Name:	RBXM
File Type:	ROBLOX Model
Popularity:	3
Category:	game
File Description:	3D model used by ROBLOX, an online multiplayer game in which users can custom build their own characters; designed to be a kid-friendly environment where people can exercise their creativity. ROBLOX models may be shirts, pants, hats, or other objects, such as buildings, stairs, animals, plants, etc.
Open Programs:	Windows ROBLOX

Name:	ROM
File Type:	N64 Game ROM File   (Most common)
Popularity:	5
Category:	game
File Description:	Nintendo 64 (N64) game file playable with an N64 emulator; stores the contents of an N64 game cartridge in a read-only file format that can be opened and played using a Nintendo 64 emulation program. N64 game ROMs more commonly use the .N64 and .V64 file extensions.
Open Programs:	Mac OS Sixtyforce Mupen64 Windows Project64 1964 UltraHLE UltraHLE 2064 SupraHLE Nemu64 Mupen64 Daedalus

Name:	RBXL
File Type:	ROBLOX Location
Popularity:	3
Category:	game
File Description:	Location file that defines a place in ROBLOX, an online multiplayer building game; describes a playing field, which consists of 3D models (.RBXM files), parts, tools, scripts, and teams.
Open Programs:	Windows ROBLOX

Name:	RUN
File Type:	Rune Map File   (Most common)
Popularity:	3
Category:	game
File Description:	Level map for Rune, a 3D action game that uses a third-person perspective and is based on Norse mythology and high fantasy; contains map information but does not include textures or music data. Rune map files can be created and edited using RunEd, a map editor based on the UnrealEd editor for Unreal 3D.
Open Programs:	Mac OS Human Head Studios Rune Windows Human Head Studios Rune Edit with the RuneEd Rune Editor

Name:	RGP
File Type:	RealArcade Game Package
Popularity:	3
Category:	game
File Description:	Data used by RealArcade games; portal developed by RealNetworks for downloading and buying arcade games Do not open as an unknown e-mail attachment as it may contain malicious code
Open Programs:	Mac OS RealArcade Windows RealArcade

Name:	RP2
File Type:	RetroPlatform Player Program Archive
Popularity:	3
Category:	game
File Description:	Compressed file archive that contains program data and related media for a game or other application; used for archiving programs for retro platforms, such as Amiga and Commodore systems; can be opened and played without requiring manual configuration.
Open Programs:	Mac OS Cloanto Amiga Forever Windows Cloanto Amiga Forever Linux Cloanto Amiga Forever