Infocom presents Tetris

Y’know, you might only get this if you’ve been using computers for a long time…but I think it’s hilarious. Royce will, too, if he hasn’t seen it already (or, perhaps, if it’s just been a while). Tom will probably understand too. The rest of you…well, you’ll just have to bear with us ‘old-timers’.

Basically, Infocom was a company that did some of the earliest computer games, back when everything was completely text-based. Think Zork, or the origininal Hitchiker’s Guide to the Galaxy game. If you have to ask…you won’t get it.

You are looking at the shaft. A large red block, four units by one
unit, is above your head, dropping slowly. It has its long edge
horizontally aligned.

>turn the block

I don't know how to "turn" something.
The block descends lower.

>rotate block

The block rotates in mid air, now with the long edge vertically
aligned.
The block descends lower.

>move block left

The block shifts to the left.
The block descends lower.

>drop block

You aren't holding the block.
The block descends lower.

>move block down

The block drops into the narrow gap, filling the four columns.
The columns flash twice, then vanish, dropping the blocks
above them down.  A musical tone is heard.

[Your score increased by 20!]

A square grey block, two units by two units, is now overhead,
slowly dropping.

— This is from a post I found that was originally posted to alt.religion.kibology, by Dave A. Largtigue.