There is a comic online, but beyond that, is there more Portal coming?
Doug: 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.
Upon release, Portal 2 faced quite a bit of backlash from gamers. Considering the game's full retail price, many were annoyed with two aspects of the game in particular: the virtual store and the length of the campaign. Portal 2 lets you purchase $80 worth of in-game cosmetics such as gestures, hats, and skins for co-op characters that don't affect actual gameplay - players were disappointed that Valve wasted development effort on such a lame money-grabbing scheme as a virtual store. Furthermore, the single player portion of the game takes between five and eight hours, depending on quickly you solve the puzzles, while the multiplayer lasts about three to six hours.
It appears that Valve can fix the two biggest issues gamers have with Portal 2 by releasing some great DLC. By adding more levels, the company can extend the length of the campaign, but it should not charge for them, otherwise the company will once again be accused of charging too much.
Portal 2 was released for Windows, Mac OS X, the Xbox 360, and the PlayStation 3 on April 19, 2011 in North America and on April 21, 2011 in Europe and Australia. By itself, Portal 2 costs $50 but you can buy both Portal and Portal 2 for just $55.