Completed Portal 2 already? Not to worry. New additions to the title are being assembled for launch this summer.

Valve's Doug Lombardi let slip the good news in an interview with Fast Company, but left the details vague.

"We will be announcing some DLC for it, so folks can keep a look out for more content coming this summer. We'll be putting more details out about that in a week or so.

"We'll support that with more videos or more comics," Lombardi said.

There's already one free comic available online, Portal 2: Lab Rat. The story bridges Portal and Portal 2 and follows the mysterious Rat Man. In-game, his graffitied dens are hidden throughout Aperture Science's test chambers.

What could the new DLC contain? It probably won't be more hats, a day one DLC option that infuriated PC gamers.

More likely is the addition of new levels for Portal 2's superb co-op mode, though we hope for something new for the single-player campaign as well.

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Tom Phillips

Tom Phillips

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