The series follows inverse Star Trek film logic in terms of game quality (which is to say, the odd numbered ones are the good ones, as opposed to Star Trek where it's even). Especially if we count Peace Walker as MGS5.
MGS3 is one of the best games ever made. Enjoy.
4 is like twenty times better than PW and its awful mech boss battles....
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"The king stay the king." - D'Angelo