the notify.txt that is sent to players
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Subject: the Armageddon game processed
Your turn is ready at
dom3minions.com
(courtesy of Gandalf Parker at Any1can.net)
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the notification could also be changed to include the turn number. It could also easily be changed to include emailing the turn file.
Which makes you automatically think PbEM. If a game had its own email address such as
armageddon@dom3minons.com then something like procmail could manage incoming emails to place the .2h files (which means "to host") into the game directory. It could also kick off a script to check for all turns being in and then run/quit the host. This would raise the number of games that a server can run by many levels.