You may find slightly different placeholder textures or lighting values in the "Archives" section compared to the final 1.0 release.
Are you trying to on a modern Mac, or follow-up [Mac|Steam] Amnesia - Installing a Full Conversion Mod [HD]
This version lacks the final polish of the 1.0 retail patch. Users on older Mac hardware may experience lower frame rates.
This version was often distributed to reviewers and early testers shortly before the official September 2010 launch.
It may default to a low resolution (800x600); you must manually edit the main_settings.cfg file to set modern aspect ratios.
