RUDE

RUDE (Retro Universal Design Engine) was originally created by Retro Studios for Metroid Prime (2002), and was the first game to run on their proprietary engine. Ever since that day, Retro has been using that same engine for their projects, albeit with major updates every step of the way (Metroid Prime 2: Echoes, Metroid Prime 3: Corruption). Metroid Prime Remastered (2023) is using the latest version of RUDE.