Shadow Tower Abyss is a dark fantasy role-playing video game developed and published by FromSoftware for the PlayStation 2. The game is a sequel to Shadow Tower, and features a number of genre and mechanical elements that can also be found in Demon’s Souls and the King’s Field series.
Here´s gameplay video by wolfman11983
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You need the original ISO to patch “Shadow Tower: Abyss (SD-1 – EE09D82F5EFD305E5A6A0EBB046E623EACD78BBB)”
Recommended Emulator for PS2