The following media are available:
Also, Sprite Guard
has a video
series where he plays HyperRogue.
See the Gallery of Lands
for a collection of screenshots of
all lands and special modes!
You can see graphical screenshots
(HyperRogue v4.x --
version 9.2 introduced 3D graphics), and ASCII screenshots
(HyperRogue v2.x -- of course, ASCII mode is still available in newer versions!).