An abbreviation of in-game.
To be in-game.

to forget, ignore

A texting simplification, used to say "I guess" without typing out the words.

Acronym for I guess or instagram

here’s for all you Australian bitches who are uncultured swines: Americans go away: basically ig means I guess but it’s an abreviation so spread the word and be a trendsetter

IG - An IG is the abbreviation of Instagram which is the best social media app on your phone if your not a loser who doesn't have it