Some systems require the separation of a subtitle. However, best practice is to follow the convention on the resource and be selective about recording something as a subtitle when it is intended to be part of the title.
Examples:
Dublin Core (elements)
Camp Lazlo: Leaky Lake games.
PES 2014 : pro evolution soccer
Pro evolution soccer 2014
The con
MODS
Camp Lazlo: Leaky Lake games.
PES 2014
pro evolution soccer
Pro evolution soccer 2014
The
con
MARC/RDA
245 00 Camp Lazlo: Leaky Lake games.
500 Title from cartridge label.
245 00 PES 2014 : $b pro evolution soccer
246 1 $iTitle on container spine:$aPro evolution soccer 2014
500 Title from disc label.
245 04 The con.
500 Title from disc label.
Schema.org
Camp Lazlo: Leaky Lake games
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