Lucid is a short, completely-linear story game based around a series of dreams had by the creator, Pixelated Cowboy. There are no real choices or gameplay; it’s more of a bunch of gifs and pictures in a series, told in an adventure game format, similar to Andrew Hussie’s MS Paint Adventures series of webcomics. It’s really funny (in much the same way as Hussie’s work), making fun of bizarre dream logic and time travel shenanigans.
You can get it for free (along with Pixelated Cowboy’s other game, Baby Get!) from her Tumblr page here, and you can view her full Tumblr blog for a look at her art and hints on her upcoming “mystery project”.