That's the word from publisher Electronic Arts, which says the game needs some tweaking before it can hit store shelves.
Access to the online gaming service is listed as "limited" as much-anticipated first-person shooter debuts.
After yesterday's price cut, Microsoft's Xbox One console has got even cheaper again, this time at retailer Gamestop.
Microsoft's Xbox One controller is "overly twitchy", according to one of the creators of forthcoming game Titanfall, but Microsoft has acted fast to fix it.
Despite a strong showing from Xbox One exclusive Titanfall -- which captured the top spot in March software sales -- Microsoft's system can't keep up with the PlayStation 4.
An unofficial price cut and a new pack-in game makes the Xbox One price competitive with Sony's PS4.
Twitch and Titanfall explode onto the Microsoft Xbox One to share your gameplay when you say, "Xbox, broadcast."