Marathon... O_O Never even heard about the game, just looked it up... I always thought that symbol in your avatar is the logo of the Tau in Warhammer 40k. Now I see that the Tau logo looks almost exactly like the Marathon one. What the heck.

You can find all three Marathon games for free in sourceforge as well as some mods for it. they use Aleph One, a 2.5D engine based on Vulcan like GZ Doom is to id Tech 1. There's also a story page site and forum. If you have a Mac, you can also get its predecessor that SS1 and 2 nicked all their main content from besides Marathon itself: Pathways into Darkness for free on the app store. I have a copy of Pathways on an emulator.

EDIT: you must be thinking of Perfect Dark Zero. the XBLA remake of the original game was much better than either one of the others.

I also recommend the Anger Sadness and Envy podcast on Rampancy.net. Think of a Bungie oriented Yogscast and you're halfway there.
it's the Marathon logo with the Thundercats symbol in the middle circle. It's the symbol for a Marathon novel I was writing. I haven't wrote that much of it and it's in dire need of a proof read.

EDIT: Just looked up the Tau logo, you are correct. I think they did that to reference the game as Marathon 1 takes place on a colony ship in orbit around Tau Ceti e.

Yes PD : 0 was the name but it was on disc before XBLA as a launch title for 360, It was pretty good too, I have a Gameboy PD as well, must look that up and play it over the summer, cheers :)

You probably know this video but others may be interested :)

LORE: Halo and Marathon

https://www.youtube.com/watch?v=I44_H_VUaQA

I have the disk of PD 0 too but not the special edition. I got the XBLA remake of the N64 one before I played Zero. I found it to be fun but much, much harder than the original.

EDIT: I found Zero to be harder I mean.

Oh? The XBLA version is a different game to Zero? I never knew that, Ill get it at the weekend, cheers and +1 for big knowledge :) !

I'm probably beating a dead horse by coming back here much later but I think our prayers have been answered somewhat :

http://kotaku.com/the-rare-collection-is-now-official-1711430869

I hope that the version of Conker in this compilation is a non-censored version of the N64 original Perfect Dark XBLA style and not the Perfect Dark Zero version AKA Live & Reloaded. Basically Microsoft should keep their skid marked mitts off it.

Speaking of which, we get both Perfect Dark games and Battletoads which I haven't played because I never had an NES or SNES and arcade development was just starting to die out when I was born.

Speaking of Perfect Dark 1, I hope it gives you the option to switch between the XBLA graphics and the N64 ones Halo Anniversary and Marathon HD texture plugins style.