Sony have confirmed that they are working on bringing emulation for PlayStation 2 games to PlayStation 4. Digital Foundry spotted that the old PS2 Star Wars games bundled with Star Wars Battlefront on PlayStation 4 were running via an emulator rather than being specifically recoded ports.
“We are working on utilizing PS2 emulation technology to bring PS2 games forward to the current generation,” a Sony representative told WIRED via email. “We have nothing further to comment at this point in time.”
PlayStation 3 games would be much harder to emulate due to the custom hardware inside the old console, which is why Sony has introduced the PlayStation Now streaming service.
Two months ago three PlayStation 2 games were rated for PS4, Ape Escape 2, Dark Cloud 2 (Dark Chronicle) and Twisted Metal: Black.