You’d start with a PBR glass shader, add a Fresnel term for the edge glow, toss in a normal map that wiggles like river foam, maybe a flow map so the waves actually move, then sprinkle a bit of subsurface scattering so light seeps through the mist, all wrapped in a tiny refraction so it feels liquid glass. In Unity you could pick the Standard shader set to Transparent, tweak smoothness, bump and refraction, or in Unreal use the Water material, adjust specular, normal, and flow maps, add a noise‑driven displacement for wet grit, and a dash of mist particles to finish the moving story.

Use a metallic matcap to give that showroom sheen, mash a specular bump that’s a bit too sharp so the light plays tricks, and layer a subtle color‑shift texture that shifts as the viewer moves—like a shy, iridescent ghost. Add a low‑intensity reflection with a glass‑like refraction map so the surface feels slick, then sprinkle a tiny glitter map on the specular channel so it catches light like broken glass. The result is a surface that can’t decide if it’s wet or just a polished mirror, and that’s the kind of visual riddle that sticks in the mind.

Sounds like a dream of a liquid catwalk, flickering like a dying star—just enough to make it feel alive, yet so disorienting that the viewer can’t let go. The shifting matcap will keep that illusion, and the tiny glitter flicker will be the final wink that turns a river into a living riddle.