Portal Trailer HD - Portal

This 2007 Main Game blends Puzzle, Platform, and Shooter genres where you navigate sterile test chambers using the Aperture Science Handheld Portal Device to create linked blue and orange portals. The core loop involves solving physics-based environmental challenges by manipulating momentum and spatial relationships, all while receiving increasingly sinister audio guidance from the AI, GLaDOS. Its distinct feature is using portal placement as the primary mechanic to progress through the isolated research facility.