Portal for the C64

Portal is a puzzle-platform video game developed and published by Valve Corporation. (from Wikipedia) Portal consists primarily of a series of puzzles that must be solved by teleporting the players character and simple objects using "the Aperture Science Handheld Portal Device", a device that can create inter-spatial portals between two flat planes. The player-character, Chell, is challenged and taunted by an artificial intelligence named GLaDOS (Genetic Lifeform and Disk Operating System) to complete each puzzle in the Aperture Science Enrichment Center using the portal gun with the promise o...