Ace Combat: Assault Horizon - Enhanced Edition is the PC version of Ace Combat: Assault Horizon. Besides the main game, it includes the following extra content:
Nine planes (F-4E Phantom II, ASF-X Shinden II, F-15S/MTD, Tornado GR.4, Su-37 Terminator, CFA-44 Nosferatu, AV-8B Harrier II Plus, YF-23A Black Widow II and Ka-50 Hokum)
Two maps (Tokyo and Honolulu)
Nine skill upgrades
27 airplane skins
For the console versions, this additional content is only available through overall eight DLC (downloadable content) packs. However, some of the skins from the console DLCs are not included in this version.