Do you like Journey, but want it to have a bit more Mario in it? This is for you.
While GRIS is a short, 3-4 hour experience that doesn't take a whole lot of gaming skill for most of its run-time, don't be fooled into thinking there aren't legitimately challenging platforming and puzzle sections. Whether this immerses you more in GRIS's world or is just an interruption to your good time depends on what kind of games you like, but I'd say it's well worth the experience.