If you’re a dedicated fan of the original Portal, then chances are high that you’re familiar with Portal: Prelude. For everyone else, Prelude was a popular fan-made mod that serves as an unofficial prequel to the megahit game that introduced us to Aperture Science, the portal gun, and murderous AI GLaDOS.

Well, just as Portal got the RTX

Source: Hot Hardware – Remixed Portal Prelude Mod With NVIDIA RTX IO Debuts On Steam