Top 100 Greatest Video Game Franchises/IP of This Generation

1. Portal

Portal is a 2007 first-person puzzle-platform video game developed by Valve Corporation. The concept of the game is not simple, but players can adapt once the understand the premise and basic gameplay of series of puzzles that must be solved by teleporting the player’s character and by using a gun that creates portals between two flat planes. The game was a huge success, with reviewers praising the level design, story, concept.