Narc and Blackstar made it aboard the Pfhor ship, but it seems someone already knew they were coming...

We're doing a new Marathon adventure-- this time fighting the Pfhor in Italy of the past in third party scenario Tempus Irae!

Tempus Irae can be played, like the other Marathon games, using the open source Aleph One engine which you can get here for Windows, Mac and Linux:

http://source.bungie.org

Tempus Irae and other third party scenarios for the Aleph One engine can be downloaded here:

http://source.bungie.org/scenarios.php#more

We use irons' Co-Op script, (but not this time) which gives weapons and ammo to both players if either picks any up, and prevents weapon loss on death (so items can't be destroyed in lava or slime). The script also allows one player to teleport to a destination set by themselves or their partner, in case co-op players run into a problem a solo player would have to restart for.

http://simplici7y.com/items/co-op

Tempus Irae has its own spoiler guide:

http://marathon.bungie.org/spoiler/tempus/

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http://www.youtube.com/playlist?list=PLIof4Cp3-cam7bAFzDEwK_wzSSEya050i

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https://itunes.apple.com/us/podcast/anger-sadness-and-envy/id266991411?mt=2

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Music used in this episode:

"What About Bob?" by Alexander Seropian, remixed by Craig Hardgrove (intro music)
"New Pacific (Reprise)" by Alexander Seropian, remixed by Craig Hardgrove (outro music)