On this month 20 years ago .hack//fragment, an online PS2 game, was released only in Japan. After going offline in 2007, fans have restored online service since then and patched the game into English. Click this link to learn more.
In a new release today 11/26, ARMSX2 has updated their Android app and now allows for online connectivity for PS2 games. You can NOW play .hack//fragment on any compatible Android device by using the ARMSX2 from the Google Play Store.