Ace Combat - Joint Assault ROM Download can be obtained free for Playstation Portable on EmuGames.net only. Play emulator game in English for the USA region. Ace Combat Joint Assault is a PSP ROM that you can download to your computer or play online within your browser. You can also download roms such as Scarface Money. Power. Respect and Phoenix Wright Ace Attorney that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.