It's got to have a protagonist with biceps that make my legs look like toothipicks, and a neck that'b bigger than his head (which should be buzz cut or bald. no emo hair here.
It's got to have guns that are bigger than half of the enemies that you kill
It's got to have a masochistic difficulty level and no allies to help you.
It's got to have terrible level design and just a pure never ending endlessly respawning horde of dumb gun toting bad guys
It's bosses have to be either Tanks, Helicopters, or a massive army of bad guys.
It's got to have "X" or "WAR" somewhere in the name.
It's got to have a protagonist with a gravely voice
It's got to include a provocative sex scene involving a blonde with large breasts.
It's got to have gore.
It's got to have a stupid, non complex, paper thin story:
"you're in a war with aliens"
is an excellent specimen for a mangame.
It's got to not even include one MOMENT of a puzzle or navigation difficulty. a large hallway full of cannon fodder is better than something intriquitely designed that you'll get lost in anyway.