Easter eggs – Hidden secrets developers include in their games, often in reference to other games or shoutouts to developers.
Fragged – typically used in FPS competitive games, means to kill someone. Term originates from the word fragmentation grenade. “He just got fragged”
AFK – Away from keyboard
Camper – someone who sits in one spot and waits for you to run by to kill you.
AAA: Industry talk for ‘big and amazing game’.
Abandonware: A nice sounding but legally-meaningless term for games no longer sold and thus deemed fair to download for free.
Achievement: An in-game recognition of your ability.
Autosave: Pretty obvious what this is. Saves your progress automatically so if you turn the game off you pick up right where you left off.
Avatar: A player character, usually customizable.
Beta: The finished game – I mean – the apparent “still in development” build before the final release.
Checkpoint: A point in the game where you respawn if killed.