Portal: Still Alive

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[Portal] <Xbox 360> Portal: Still Alive is a 2008 Xbox Live Arcade release of Portal. It is very similar to The Orange Box (Xbox 360), and includes additional levels based on Portal: The Flash Game.

The game can be run on Xbox One hardware, and is rendered at 4K on Xbox One X and Xbox Series X.

The exclusive levels were later ported to PC by fans as a mod.