An phrase used and likely originating from pro gamer JESSE JO MARTINEZ, as early as 2006 in Guild Wars 1 or 2010 in Heroes of Newerth, when a game, match, round, or video game is near or about to be over, and you or your team are winning or losing. Usually it gets mumbled in frustration or in excitement over voice comms.
*Team A just did something stupid, giving Team B the lead. "That's game, we lost bois."
*Team A just did something really awesome near the end of a game turning the game into a win shortly after. "That's game. That's GG. We won this easy."
If said before a game is over in all chat, will be interpreted as you being either demoralized or wanting to concede, or confident you've already won the game.
A phrase used when something doesn’t go as planned. This phrase is often followed by a shrug while saying.
Employee: "I’ve put all my hard work into this company and they still haven’t gave me no raise yet. Got these other workers sitting on they behinds getting raises for not doing a damn thing while I’m carrying all the weight. I’m so sick of this sh*t!"
Me: "Hey, that’s just how the game go"