The wargames program had me confused from my first slackware install up through Debian and until I first installed NetBSD on an old Ultrix workstation.

On NetBSD, I found /usr/games/wargames in /etc/shells, and an entry in /etc/passwd for a user named falken whose shell was /usr/games/wargames.

All of a sudden it made sense: it was intended for guest accounts to play games and nothing else!  Why is this history not preserved in Debian?  Why is /usr/games/wargames not registered as a shell, even?