It's a tribute to the late, great text adventures of yore, and even features a special guest appearance by Steve Meretsky, of Hitchhiker's Guide to the Galaxy (computer game version) fame.
Text adventures hark back to a time when computer graphics, once one got over the fact of their very existence, were pretty unimpressive. Forget eight-bit color. You were lucky to get eight colors. And if you had one of the monitors shown in the video, you got eight shades of green, you lucky dog. We also had to walk five miles uphill in the snow to type out programs in BASIC, but that's another day's post.
Infocom, the company best known for these games, transcended these limits by encouraging imagination through vivid storytelling. They're still fondly remembered by geeks of (cough-cough) a certain age, and I'll bet that the younger generation of geeks would get what the fuss was about too.
G'wan, give it a try. Click the HGttG link.
Get that babel fish.