Xbox and PlayStation online services have been suffering technical problems, amid claims a hacking group has disabled their services.
Microsoft and Sony - the companies which make the games consoles - have told customers they are aware of issues affecting their online services.
A hacking group called Lizard Squad is claiming to have caused the problems.
Microsoft and Sony have not commented on the claim, but both said they were fixing the issues.
Just before 21:00 GMT, PlayStation's official Twitter account posted: "We are still looking into the PSN (PlayStation Network) issues reported earlier. Thanks again for your continued patience today."
A message on Xbox's website says: "Hi Xbox members. Are you having a rough time signing in to Xbox Live? We're working to get this figured out right away.
"Keep trying to sign in when you get a chance. We're grateful for your patience, and we'll be sure to loop you in on our progress in 30 minutes."