User blog comment:Masseffect7/PS2 Emulators/@comment-9984046-20130625222704

Yes, there exists an emulator called PCSX2. It supports Ace Combats 4, 5 and Zero, but 4 is the only game that's playable, while 5 and Zero are playable in game but you supposedly can't beat the entire game. There are tutorials on the web on how you can set it up, but honestly, I'd suggest finding another PS2 on the market since they're so dirt cheap. For reference, at GameStop, you can buy one for $100 brand new.