I have enough cash for only one of these games. Which one should I pick?

Ratchet & Clank Future: A Crack In Time.

I'd go for Demons's's's's Souls if you've got the time and patience.
God of War for lots and lots of blood with some fun.
Ratchet and Clank for GUNS!
 
I don't know though since I don't own any of them but Demons's Souls has recieved a lot of praise and you won't find anything quite like it.

Help me out! I want all of these but I've bought 4 games in the past month or so already. Cash is tight and I only have money for one more game. The only factors I care about are how much fun I can have with it and how satisfying  it is to play.

I went with Ratchet & Clank, even though I'm not really a big fan of the series. It's a safe bet. With GOW Collection, you're getting two excellent games, but you're getting two excellent, but short PS2 games & if you've played them already (and aren't big on re-playing old games) then it's not such a great deal. Demon's Souls I think is friggin' awesome (if repugnant & masochistic at times) but that game is way too love-it-or-hate-it for an impulse buy.

Go on a PSN game binge.  Fat Princess + Trine + PixelJunk Shooter + Critter Crunch + Shatter = $60, and all together has way more value than a single game.

" Go on a PSN game binge.  Fat Princess + Trine + PixelJunk Shooter + Critter Crunch + Shatter = $60, and all together has way more value than a single game. "

Shit I dunno I don't have a PS3. I wish I could play Ratchet and Clank though, those were some of my favorite games on the PS2

" @Andorski said:

" Go on a PSN game binge.  Fat Princess + Trine + PixelJunk Shooter + Critter Crunch + Shatter = $60, and all together has way more value than a single game. "

Are people playing Fat Princess? I've been meaning to buy it for some time but there were news that the servers are empty. "

God of War Collection, since it's 2 games in one! Sure, it's kinda the same game, but that's a good game.

 If you want satisfying, then there's nothing that can beat the satisfaction you can get from playing Demon's Souls. Whether it's the time you finally killed that one boss or you killed an invading player and sent his ass packing or you hit the wall with your weapon like a dumbass and stunned yourself and an enemy is about to one shot you but you get a swing off in time, you'd be hard pressed to find another game that just makes you wanna do a fist pump and a verbal fuck yeah!

i am going to go with God of War collection. great value 

havent played any of em since i never touched a PS3 but i'd say God of War

I'm going to laugh if this poll gets equal votes throughout.

 Demon's Souls 

I can't say enough good things about Demon's Souls. Once you learn the basics, the game will own your soul. So good.
 
It'll also get you the most bang for your buck (it's loooong)

id say god of war collection if you havent beat them already, there some of the best games out there!!! 
 
  my second choice is ratchet and clank, you can never go wrong with these games...

Demon's Souls, it's rare and it's a really hardcore game, a gem in everyone's collection.

Demon's Souls.  Only game on PS3 and 360 thus far I've decided to not sell after beating it.

Demon's Souls.

I made another character for Demon's Souls, god damn has that game developed into an addiction for me.  I'm almost a little scared to tally up the hours I've spent on that game lol.

Shoplift all three and spend your money on snacks.

If you hate yourself but love video games, pick Demon's Souls. 

Demon's Souls

"but I've bought 4 games in the past month or so already.  "

fuck demon souls get Ratchet

Ratchet!

Your smartest choice would be the two games that aren't Demon's Souls.  Not to say that it's a bad game, but it's not for everyone, so it's better to rent it first before buying especially if cash is tight.

I'd wait for Mass Effect 2 (which comes out as your paycheck hits) and then opt for the Battlefield : Bad Company 2 Demo (360 and PS3) or Beta (PC), which starts the officially the week after the release of Mass Effect 2.
 
Only 1 week of wait left for ME 2 - folks.
 
If it has to be one of these 3... Demon's Souls or Ratchet.

" Shoplift all three and spend your money on snacks. "

get god of war collection. pretty fun game and easy trophies.

" Go on a PSN game binge.  Fat Princess + Trine + PixelJunk Shooter + Critter Crunch + Shatter = $60, and all together has way more value than a single game. "

Demon's Souls is the winner i would say.

Valkyria Chronicles

  God Of War Collection 

D: Just Cause 2
 

Demon's Ratchets: A Collection of Ratchet and Clank's Souls.
 
Or buy a bunch of ice cream. 

Demon's Souls. Rent it before you buy it though.

If you can stomach the difficulty, Demon's Souls. Almost everything about it refreshing and it is one of the few games that walks a perfect balance between simplicity and depth.  It is overflowing with atmosphere as well.
 
Why anybody is still interested in Ratchet and Clank is beyond me. Yes, the games are quality, but that series is so stale and recycled at this point.  And after Super Mario Galaxy, the Ratchet and Clank games look extremely typical, fairly unimaginative and pedestrian. That's not to say they are not good games, but they are definitely not top-tier in my opinion. The last time R&C was a top-tier platformer was during the PS2 glory days.
 
As far as the God of War Collection is concerned, I'd rather buy new games rather than 2 remakes. But that's just me.

" Help me out! I want all of these but I've bought 4 games in the past month or so already. Cash is tight and I only have money for one more game. The only factors I care about are how much fun I can have with it and how satisfying  it is to play. "