This is an iso file of the full Windows PC game titled "Star Wars Jedi Knight II: Jedi Outcast" AKA JK2, JKO or just JO.http://www.ign.com/games/star-wars-jedi-knight-ii-jedi-outcast/pc-16463
It plays on windows 7 with no crack needed provided that you burn the iso to a blank CDR disc with a free iso burner such as ImBurn to do the install AND you manually run the installation file as an administrator with the Windows Aero theme disabled. The install file is named JediOutcast.exe (which is located in the Install folder) and it has the games logo as it's icon.
You may keep the iso file (and continue to seed it) in order to play the game without having the CD in the CD drive. This can be accomplished by mounting the iso file into a free virtual drive emulator such as Virtual Clone Drive, Daemon Tools or Alcohol 52%.