http://store.steampowered.com/sub/14587/ Buy? Don't Buy? Yes. No. Yes. No. Yes. No. Yes. Yes. Yes! YES! No.
Oh god. I'd say yeah if you could spare the money then copy the doom, heretic, and hexen wad files to doomsday. http://doom.wikia.com/wiki/Doomsday
It's pricey because of ... RAGE? <sigh> Just depends what you have already. If you already have Doom3 and Quake3, just pick up a few of the old ones.
Nope. The only thing I own on that list is RAGE, for both PS3 and 360. >____> cyberjim, that looks awesome.
This. aaaaaaaaaaaaand, DOOM is pretty much free-to-play, along with almost every other game of that era. Doomsday is okay, but there are better variants. I used Skulltag before I started playing multiplayer. Also, a lot of DOOM mods offer split-screen play and whatnot. Just google some shit, I'm too lazy to find links.