Portal 2 Trailer: Sony Conference - E3 2010 - Portal 2

Portal 2 is a main game, released in 2011, that blends platform, puzzle, and adventure elements. You play as Chell, navigating the decaying Aperture Science Laboratories with the help of a robot companion. The core gameplay revolves around using a portal gun to create linked portals on surfaces, allowing for unique movement and problem-solving through physics-based challenges. Distinctive features include innovative puzzle design that integrates spatial reasoning and momentum, environmental storytelling, and a narrative driven by witty AI commentary.