We often -do- think with portals here at Gamers Nexus, and our interview with Erik Wolpaw encourages that. One day, for instance, I found Steve "Lelldorianx" Burke talking to himself and looking at a wall, then he jumped into the wall and broke his nose. The moral of the story, obviously, is that Portal is a good game. It also makes people break their noses -- but hey, we're gamers. We heal faster than normal people. Despite some of the repeated puzzles and trials, Portal 2 blew our minds, and we're happy to inform those of you who have gone portal-less for years that the original Portal is now available for free.
If you've already beaten Portal thoroughly into submisison, why not try out this Portal Prelude mod?