Persistent weather
Other (objects, etc.) theme
Some unusual (fog, rain, high wind, storm, etc.) weather phenomena persist far longer than it naturally should or is otherwise somehow ever present.
7
games
5platforms
PS2 2001-09-25
WIN 2008-09-30
PS3 2009-02
PS1 1999-01-31
XBOX 2001-12-24
WIN 2010-05-28
Commonly done for the atmosphere it provides, such as in horror games rain, storm, or fog very commonly persist for the whole story or up till near the end (often also missing early on before the "bad stuff" starts).