The idea behind Portal ends up being more brilliant than Portal itself. Regardless, we definitely had a lot of fun with what is there and appreciate the level of polish and thought that went into the presentation.
Portal is a magnificent puzzle game. The titillating wrongness of every solution and the wonky thinking required to get there make you feel like a space-folding genius, and yet you'll almost never get stuck.
One of the most interesting and delightful things Valve's ever done, but also one of its least fulfilling. If only we had our own portal gun to bridge the gap to the first infusion of new content, perhaps we could forget it.