@psenough here is the link to the repo for Second Reality on IRIX. There is a download bundle in releases compiled for IRIX 6.5.x with matching SDL2 GL runtime. Graphics card with TRAM required for GL rendering context. https://github.com/flexion-unity/SecondReality-IRIX
GitHub - flexion-unity/SecondReality-IRIX: SecondReality - Demo by Future Crew 1993 - Ported to IRIX
SecondReality - Demo by Future Crew 1993 - Ported to IRIX - flexion-unity/SecondReality-IRIX