Note: it just doesn't make sense to view the .tty files below within your browser. Instead, you should replay this with ttyplay(1), also available for OpenBSD from the ports tree (misc/ttyrec) or as a package.
If you don't want to install ttyrec(1)/ttyplay(1), you can just run
$ telnet dead-parrot.de
to see one of the three demos, rotated every minute. Remember that most telnet clients allow you to switch to command mode using CTRL-] (in case you become bored and want to disconnect or reconnect to get another demo).