New Portal 2 vids show off co-op gameplay

Valve has released a bunch of cinematically composed co-op screenshots fresh out of the PAX show underway this weekend.

Meanwhile, lucky attendees have had their cameras pointed at a co-op gameplay demo, in which Valve shows off the Ping tool – a waypoint market that enhances player communication – and several other clever co-op gameplay mechanics.

Valve also promises that the co-op and single-player campaigns will both each be longer than the first game’s campaign was. And hearing that makes us very happy people.

[Source]