NEC’s Tetris processor
Tetris is a classic time-waster, both in and outside of the office. What good is any computing device if it can't play this game? Tokyo System House certainly thought so, and ported it to the NEC mini5 line of CP/M-based word processors. Let's preserve it for future generations and then see what it's like!
First, the author had to get their hands on a NEC mini5 word processor. Then, they had to somehow manage to find a copy of the game itself. Then, and only then, could the actual preservation attempt begin.