Metal Gear Online will finally launch on PC tomorrow morning, Konami has announced - but it still isn't entirely finished.

Instead, Metal Gear Solid 5: The Phantom Pain players will be able to "opt in and download the Beta release of Metal Gear Online" from 10pm PT this evening (6am GMT January 13), when they'll be given the first chance to give the online game a go.

"While that's our target time, there's a chance it'll slip by an hour or two as we implement this awaited update," Kojima Productions LA community manager Robert Peeler posted on Steam, "but rest assure we will be here for support and launch as planned."

A launch date for the final release has yet to be confirmed.

"It's been a long wait, and we absolutely appreciate the support we've received not just from MGO fans but also our passionate Steam community. Seriously, you all are amazing! 

"What little time we have left we will spend playing MGO."

Konami announced last November that it had "made the decision to close its Los Angeles Studio", which developed Metal Gear Online, "effective immediately".

Metal Gear Online launched on console shortly after Metal Gear Solid 5: The Phantom Pain's launch last September.