The ".rar" file for the Collector's Edition (CE) typically includes several bonus features accessible from the main menu:
This gadget is used frequently to reveal hidden details or progress through puzzles. Puzzles & Hidden Object Scenes (HOS):
Some scenes blend puzzles with hidden object lists; be prepared to interact with objects (e.g., using a corkscrew or bayonet) to find required items. Collector's Edition Extras
These are multi-part puzzles. You must complete one section to unlock the next, though you can skip individual parts if needed.
Access exclusive wallpapers, concept art, and the game’s soundtrack. Notable Solutions
If you prefer visual guides, YourGibs Gaming and AdventureGameFan8 offer comprehensive video playlists covering the full game and bonus content.