Fanservice

Due to nature of what fanservice is, this can't be used on erotic/porn games.

In western games this tends to be somewhat different, usually occurring in form of unnaturally voluptuous females in skimpy clothing in games where they serve no purpose.

Often derogatorily said to be selling off to the adolescent males by abusing their raging hormones or some such.

Examples: (titillation)

• Skimpy clothing (especially if this is BDSM-like latex/leather gear, likely including swimwear/bodysuits, short skirts, etc.)
  
• Plenty of upskirts/pantyshot content
  
• Suggestive posing or positions, whether intentional (blatant posing) or accidental (e.g. falling over and showing "naughty" things)
  
• Plentiful voluptuous females, alternatively toned/athletic males (this only when scantily dressed)
  
• Ridiculously body hugging clothing (e.g. lines tightly under female breasts, emphasizing their shape and size)
  
• Jiggle/boob physics
  
• Some may even go so far as to show camel toes or nipples through clothing (as in the shape, not necessarily any see-through stuff)
  

... and some other things, but these are the most obvious/common.

Examples: (non-titillation)

• Gives excessive detail on how something functions or displays that function in great detail, such as long mech transformation sequences or guns firing and cycling bullets, in slow motion.