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Portal: Prelude RTX

Stream Portal: Prelude RTX in your browser through GeForce NOW.

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About Portal: Prelude RTX

Portal: Prelude RTX is a stunning fully ray-traced remaster of the iconic prequel mod for Portal, featuring NVIDIA DLSS 3 and RTX IO. Survive a facility run by Aperture Science’s heartless employees in 19 challenging new chambers and learn how everything came crashing down.

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