The game is divided into four Chapters, and appropriately enough, they're largely even with the islands you visit. Steam Community
The specific naming convention (using dots instead of spaces) is typical of or digital distribution archives found on platforms like Reddit's CrackWatch . Two.Worlds.II.HD.Shattered.Embrace.Update.v2.07...
While the base game exists on consoles, the later HD updates and Shattered Embrace expansion were primarily focused on the PC version available on platforms like Steam. The game is divided into four Chapters, and