Galagangster
A guy who plays Galaga like it's a religion and spends all his time and money on it like it's his last chance to be cool. He'll stay up all night just to beat level 50 and it's hilarious when he misses the whole point and gets shot by his own ship.
My cousin plays Galaga so much he forgot how to brush his teeth.
I saw a guy in the mall playing Galaga and he had a snack in one hand and a joystick in the other.
My friend tried to beat level 50 for three days straight and still failed.