Japanese phrase meaning "Go for it"! or "Do your best!" Similar to how English speakers say "Break a leg!" It's usually echoed before major events involving competition.
Commentator A: It is the finals round of our matchup with our two competitors in their respective corners!!
Crowd: Gambatte!!
Fighter A: what are they saying ?
Fighter B: They are cheering us on. They're telling us to "Do your best!" or "Break a leg!"
"That guy has a big Gamnat"
"Gamnat haircut"
"Sup Gamnat"
"Man, that shit is gamnizzle"
"Gaminator"
"Get off my Gamnat"
"Im going to bust your Gamnat open if you don't shut up."
Gamation Appreciation Day happens on the 12th of April and is meant to show our gratitude to Gamation. On this day people change their profile picture to the one used by Gamation.