The Game Idea Generator

 Great multiplayer and controls together in a modern Pitfall!.
 Myst and New Super Mario Bros. had a baby. It has great graphics.

A retro throwback to Super Smash Bros. Brawl
 
Dead or Alive 3, but with the graphics of The Legend of Zelda.
 
A new spin on an old favorite: StarCraft II.

"ESPN NFL 2K5 meets Tomb Raider II."
So, Tony Romo goes searching for the Ark of the Covenant?
 
"The love child of Need for Speed Most Wanted and F.E.A.R."
What?...
 
"The love child of Pac-Man and Halo 3."
Oh God, my head just exploded!

Star Wars: Knights of the Old Republic, but with the controls of Pokémon Colosseum.

Virtua Fighter 2, but with the gameplay of Grand Theft Auto: Liberty City Stories.

Metal Gear Solid, but with characters that even grandma can enjoy! 

"The gameplay of StarCraft meets the controls of Gran Turismo. "

Haha i got, Ghost Recon, but actually fun. I love it!

You asked for it: Halo: Combat Evolved, reborn.
Boom.
Edit: Halo 2 and Halo: Combat Evolved had a baby. It has great art style.
Double boom.

The classic storyline of  Portal combined with the developers of Left 4 Dead 2.    
Mario Party 7, but with more gameplay - might be on to something here... 
 
Drum roll for the big one... 
"The storyline of Crazy Taxi meets the characters of Venetian Blinds. " YES! Finally!

 Luigi's Mansion, but with more graphics.  

YESSS!!

Finally, a remake of  Call of Duty: Modern Warfare 2. 
 
Edit: Also: 
Great gameplay and developers together in a modern  Angry Birds.

 Super Mario Sunshine, but with more art style.
 
What the fuck does this even mean!

"Finally, a remake of  Madden NFL 2005." 
 
I knew that if I waited long enough, they would finally give in and give the true fans of the series what they want.  
 
You've created a monster.

"Team Fortress 2 meets Zelda II: The Adventure of Link. "
 
YOU HAVE MY ATTENTION
 
 
EDIT:  "Deadly Premonition on steroids." 
 
Oh, shit.

 "A new spin on an old favorite: Star Fox."
 
I see what you did there

"Golf, stripped down to it's essence."
 
And all that I could think of was
  

 The love child of Half-Life 2 and Left 4 Dead 2. 

Hmm...
 
 

You asked for it: Super Mario 64 DS, reborn.

THIS IS WHAT EVERYONE WANTS....RIGHT?

"The love child of Tom Clancy's Ghost Recon and Crazy taxi" 
Yes.

" If only GoldenEye 007 had better graphics, it could be as big as Star Fox 64!  "
 
I'm not too sure how to feel about this one...

Super Smash Bros. and  Stacking had a baby. It has great storyline.

Sonic Adventure, but with better storyline.    

Pokémon Diamond meets Call of Duty: Modern Warfare 2.     
 
I'd play that game.

"Just Cause 2 meets Grand Theft Auto IV." 
 
Could that be Saints Row 3?

"If only  The Sims had better level design, it could be as big as  Need for Speed Most Wanted!  "
 
Indeed  
 
 
"The graphics of  Pac-Man meets the characters of  Star Wars: Battlefront II. "   
 
To quote Ryan Davis, Oh God.

"Portal, with updated multiplayer." 
 
Wont have to wait for long!

"  If only  Space Invaders had better single-player, it could be as big as  Star Wars: Knights of the Old Republic!"

 Counter-Strike, but without all the fancy single-player.

 Picture this: Luigi's Mansion, with revolutionary new multiplayer.
 
 
It actually makes sense!

 The love child of Halo: Combat Evolved and Madden NFL 2005.
 
So...Halo 2, then? :P

Half-Life on Steroids

 Call of Duty 2: Big Red One, but with the graphics of Shadow of the Colossus.

Call of Duty 4: Modern Warfare, but actually fun.    

If only  World of Warcraft had better developers, it could be as big as Need for Speed: Underground 2!  
 
 
...ahahaha 

" God of War III for the whole family! " 
Yes...this is clearly a great idea.

 Sonic & Knuckles meets Uncharted: Drake's Fortune. 
 Halo: Reach online. -( this would never happen.)
 Team Fortress 2, with updated storyline.  
 The gameplay of Space Invaders meets the multiplayer of Halo 3: ODST. 
 Ms. Pac-Man, but with more characters.
 Gran Turismo, but actually fun. - this one posted for truth.  
 Metal Gear Solid meets Gran Turismo 5 Prologue.

StarCraft, but with the developers of Warcraft.    

 The classic graphics of Super Meat Boy combined with the multiplayer of Super Smash Bros. Brawl...
 

 

 Finally, a remake of Warcraft. 

 Yes! Finally!

Star Wars: Knights of the Old Republic, with updated storyline

 Call of Duty 4: Modern Warfare online.

The classic single-player of Mass Effect never gets old!

Sure doesn't!
 
 
 
 
 

SPACE INVADERS MEETS CRYSIS 
 
Do it!

These are all hilarious, thanks everyone! I've tweaked the algorithm a bit by adding random adjectives and comparatives to some of the phrases. Enjoy!

Portal meets The Legend of Zelda.

Hmm, this sounds awfully familiar...

Super Smash Bros. Brawl, stripped down to its essence. 

  @Artemesia: GOW on....steroids?.....!?!?What does that even look like!?
 
Oh and  ....
 

Batman: Arkham Asylum, with better gameplay.

" The Sims and Pokémon Gold had a baby. It has excellent characters. "
 
Hell ya

 If only Super Mario 64 DS had better controls, it could be as big as Deadly Premonition! 

Last but not least...

 Mass Effect online.
 

"

 If only Super Mario 64 DS had better controls, it could be as big as Deadly Premonition! 

I am sorry but this is too good.They should game the name to Funny Ass Game Idea Generator. "