Room Up

Also in short text "r^" is a term used in the video game SOCOM to notify other players that the room/server they were waiting on is now up and ready to join. Usually said when organizing a clan battle to make a designated private room with a password.

"Hey guys, Room Up! Hurry and join so we can start the game A.S.A.P."

by Jay Ping Quan July 21, 2009