Plus a 75% off voucher for Portal 2, natch.
By Tim Colwill on August 17, 2012 at 4:02 pm
Owners of Portal 2 may have noticed a voucher for 75% off Portal 2 appearing in their Steam inventory this morning, and that’s because Valve would like you to go out, grab a friend, and get them ready to help you out with what they expect to be a wave of new user-created co-op maps.
Valve has just opened up the Perpetual Testing Initiative to co-op map, you see, allowing users to now create and play their own co-op experiences which – given how amazing and delightful Valve’s own co-op campaign was – is a great move. They’ve also included a new ‘Quick Play’ mode to auto-generate a list of the top-rated maps, which is tops.
Source: Press Release