I've run two short games of Alternity, one Star*Drive and one Dark Matter; me and my players had a blast playing and the system is a contender for one of my top RPG systems of all time.
The Star*Drive game ended with the players barely being able to fend off a Kroath attack in Stoneburner ruins on Yellow Sky to recover an infant Stoneburner kept in stasis.
For the Dark*Matter game I ran the Killing Jar adventure and loved it.
I've also been in a bunch of custom Alternity games as a player, the most recent one being an extended game where the GM adapted Halo to Alternity. We all started as ODST Marines who graduated up to Spartan IIIs. Alternity rules make Covenant weapons extremely lethal where plasma is concerned.
So yeah, I love Alternity and I'm glad to see it's still being played.
Wow those are great Alternity news and Halo converted sounds like a very interesting idea.
I hope to play something with it again, sometime in the future ;)