The full form of RTW is Rule The World
RTW stands for “Rule The World”. Commonly used among younger teenagers, and a few older ones, who view themselves as either edgy or “random”; that is, eccentric. It is more commonly used in online gaming as there are games where taking over the world is part of the objective, although it can still find use in games where ruling over the world is not part of the objective or even possible.

Origin of RTW
The likely origin of RTW is the early-to-mid 2000s on internet forums and text messaging. Because actually ruling the world is a very difficult task, claiming to rule the world or claiming to want to rule the world became exclusively fodder for those that would declare themselves eccentric or “random”, as well as those who thought they were edgy. This is why the acronym has a reputation of being used extensively by both younger people and people that are attention seekers. The acronym is largely dated and doesn’t appear much on social media but still sees usage in gaming chat as taking over the world in some games is more obtainable.

Other Meanings
RTW can also stand for “Round The World”. Normally used as slang for taking long trips or inferring someone is going on a luxury trip.

Conversation Examples
Internet Profile

HHHHEEEEEYYYYY and RAWR )D I’m SnuggleMuffin, the master of EVIL and DOOM! LOL! I’m planning to RTW once I graduate high school. JKJKJKJK. Or maybe not :P. I love ponies, the color purple, and wolves. Wolves are so dark and mysterious don’t you think? I sometimes howl at the moon! LOL! JK. I’m random!

Gaming Chat
Player 1: “So what type of guild are you running?”
Player 2: “We’re an adventuring guild with plans to RTW.”
Player 1: “RTW?”
Player 3: “Yeah. Rule The World. Our Guild Leader stated that. Not sure how we would go about it.”
Player 2: “He keeps it there cause he was that “random” kid when he made that guild. It’s tongue-in-cheek really.”
Player 1: “Can I join?”
Player 2: “Certainly!”