n. 1. (in romance) A person who - by personality, attitude and/or influence - is a true stand-out amongst the norm of dating and relationships. They are generally unaffected by what would be considered superficial charm (money, appearance, social status, etc.) and are more attracted to someone's deeper qualities, hence they would "change a player's game." Such persons are considered relationship and even marriage material.
v. 1. (in sports) A sudden action - usually the result of a successful plan - that changes the entire course of a game or match.
Noun:
Emma Stone's character in "Crazy, Stupid Love," whom Ryan Gosling's character considered a Game Changer.
Belldandy from the anime "Ah! My Goddess"
Lisa Leveridge as described in "The Game" by Neil Strauss
Verb:
Every Michael Jordan moment in the NBA play-offs
Marshawn Lynch's run against the New Orleans Saints in the 2011 NFC Wild Card game
Jon Jones' successful counter-punch on Lyoto Machida
The one interest of whom a Player most desires, and always shall desire into the foreseeable future. The interest is good enough for a Player to give up his 'game' and change their situation dramatically - in the hope this new adaption will be ideal for the new interest.
When someone comes up with an idea that further encourages laziness (such as the "smart garbage can", alexa, siri, the otherpointless robots, business ideas that cater to lazy people who are helpless) that is often called a "game changer".
I can have my smart trash can order paper towels so I can avoid walking into a store. What a game changer.
Pay a fortune for some chopped up fruit and vegetables? A game changer for sure. The meal kits that people blow their money on? Another game changer.
Alexa and Siri can turn on lights, tell you the weather so you don't have to look outside, can order batteries so you don't have to actually go to a store any longer, etc. What a game changer this one is.