Below is every MMO & MMORPG term beginning with the letter O:
“oh my god” Used in exclamation or to convey surprise.
“on my way”
out-of-character – used to refer to OOC chat.
“out of mana” Said by casters who’s mana supply is depleted.
Original Sound Track. Refers to the game’s music. “This game has great music, I want to buy the OST!”
Derived from the original word “own,” both words have the same meaning: to defeat some other entity in battle or other form of competition. The “pwnz” origin is probably from the fact that the “o” and “p” keys are adjacent on the standard qwerty keyboard, and were used interchangeably by mistake in games and stuck around since then.