This month marks the fifth anniversary of the release of Portal 2. Exponentially longer than the first game in the series, Portal 2 expanded on the mechanic of navigating and transporting objects via portals by introducing a mechanic from another game, Tag Team's Tag: The Power of Paint, which was developed by some students from the DigiPen Institute of Technology. The game included various colored paint gels, each with different properties. Red paint would cause the player to move faster. Blue paint would allow the player to walk on any surface. The game's designers were hired by Valve to work on Portal 2, resulting in puzzles that not only employed the use of portals, but also the use of these coloured gels. The result was what PC Gamer called "The best game of the year." Doug Lombardi, director of marketing at Valve, said that "Portal was a test bed. Portal 2 is a game." Gabe Newell has called Portal 2 the "best game we've ever done," and make no mistake -- Portal 2 is an excellent title. To celebrate its fifth year anniversary, I'll be listing my favorite moments in the game. Enjoy!
Disclaimer: This article assumes the reader has played and beaten Portal 2 and there are spoilers ahead. You have been warned.