Elon Musk stayed up all night playing video games in a Vancouver hotel after committing to buy Twitter, per The Wall Street Journal.Grimes, Musk's on-off girlfriend, revealed the anecdote in Walter Isaacson's upcoming biography on Musk, where he was in "stress mode."Musk played the fantasy game "Elden Ring" until 5:30 a.m., moments before tweeting about making an offer to buy Twitter.