Things in games you can't resist

Is there anything that if you see a game has, you want to buy it? Like a special feature such as ranked multiplayer or the like.
 
Personally I am a sucker for create a character and co-op multiplayer. Anyone else?

Exploration and Sidequests. Like when I heard about the social links in Persona 3, I just had to buy. 
 
I just got Deadly Premonition because I want to see what the town is like.

Boobies...
 
No, but seriously, boobies... No, but seriously seriously, I like games that have scale. Uncharted and God of War have scale, and usually with games like those, you also have a good story that will take you on an insane adventure, where every set piece is bigger then the last.

Collectibles. Even small stuff like the blood-stuff that you get in God of War. Yeah, I know it's my second playthrough and I've already upgraded everything. I know I've completely maxed out the counter. I don't care. I'm still going to go out of my way for that red chest.

A really good story.

Randomly shooting my weapons

" Collectibles. Even small stuff like the blood-stuff that you get in God of War. Yeah, I know it's my second playthrough and I've already upgraded everything. I know I've completely maxed out the counter. I don't care. I'm still going to go out of my way for that red chest. "

I'm kinda a huge sucker for open world games. I actually prefer linear story-driven games like Uncharted 2 but when I see a game has an open world I just have to buy it.

Head Shots!

Loot, if any items has a color-coding on it then I will get it. One way or another!!!!!!!

" A really good story. "

The word Bioware on the box.

Stylish graphics, i.e. neon, retro, etc.  
 
See: Space Invaders Extreme, Geometry Wars, Geometry Wars 2, radiangames JoyJoy, radiangames Crossfire, Retrofit: Overload, Arkedo Series 01 - JUMP, Arkedo Series 02 - SWAP, Arkedo Series 03 - PIXEL, Big Bang Mini, bricks4ever... basically indie games

Nolan North.
 
(Except not really.)

Collectibles 
I'm a completionist who never fully completes a game.

I like games with a lot of upgrades. It makes me feel like once I've beaten the game I can still get stronger. That and games with a ton of loot like Borderlands.

LOOT! 
 
and lots of custom character creation stuff (like SR2 or APB) (yeah, go ahead and say I have a vagina). 
 
+stylish graphics.

A good story, interesting or lovable characters, a unique art style or gorgeous graphics and wide range of appearance customization. 
 
Oh and the gameplay has to be at least adequately fun.

A swing mechanic, and sweet reload animations. Separate animations for reloading when empty or not is a plus as well.

when a game has patches instead of priced DLC.
how i miss them days.

Not necessarily a feature in a game per se but I notice I pay much closer attention to games made by studios and directors I really like. Examples like Kojima, Suda 51, Ueda, Visceral Games, Mikami, etc. If one of my favorite game-makers or studios is behind it, I'm all in. 

crates'n'barrels...gots to smash'em.

a replay feature. one thing i love doing is playing back previous footage and editing them with various camera angles and effects in game.  
  
although, it's kind of a rarity to see that in any game so i'll go with customization. it's easy to spend hours creating tons of nonsense 

good multiplayer (only exception is mass effect 2)

I go crazy for any game which makes a specific point of never breaking perspective, a la Half Life 2.

Custom character creation. I love playing with sliders. The more the better. Cheekbone width? I'm sold.

" LOOT!  and lots of custom character creation stuff (like SR2 or APB) (yeah, go ahead and say I have a vagina).  +stylish graphics. "

Fusion. 
  
Like in Shin Megami Tensei games. I like to fuse stuff together to get more stuff. 

It's shallow (and perhaps creepy) of me, but satisfying blood effects have always appealed to me. If I'm gonna be shooting tons of dudes, it needs to feel satisfying. Initial splatter when the bullet hits the target and the splatter of blood on any surrounding surfaces.
 
Perfect Dark on the N64 initially turned me on to this, I think. That game did blood splatter pretty damn well for its time.
 
And then Counter Strike and Halo 1...
 
...and now, I'd say that Rainbow Six: Vegas 2, GTAIV, and Red Dead Redemption have all done the blood well.
 
Someday, when a studio invests money into creating realistic fluid physics so that blood splatter occurs realistically and differently every time, I'll probably cream my fucking pants.

 Obviously the game has to be good, but aside from that all I really care about when considering a purchase is longevity.  Whether it be single player focused(Mass Effect 2, Persona 3/4, etc.), or something with multi player I enjoy(Modern Warfare, Bad Company 2, etc.), it just needs to be something that I will get plenty of playtime out of.

Killing babies.

Open World, Ranking up in Multiplayer, great story, upgrades, and side quests.

/dance 
 
  

"I've heard that doing this will fucking rape me..."*TOUCH*"OH GOD WHY?! WHY?!"

Co-op with character progression.
 
Runny jumpy climby.
 
A real sense of design.  Which is, I want every moment of every game to feel like it was being directed for me.  Even games that have non-linearity, I prefer discrete paths that wind and intersect based on your input than a janky open-world where everything feels as if it happened randomly through a limited set of factors than by human vision and design.
 
Subtext.  I like when a game refuses to explain everything that goes on by design rather than oversight.  So many games have the obligatory third act setup where they explain every single mystery that has occurred so far.

Quick-Time Events. Seriously. 
 
And late title cards.

Diablo-esque inventory systems!

There is no single feature that can make me want a game.

" @LiquidPrince: Those games has scale? Far cry 2, gta 4 and crysis has scale. You picked some of the most linear corridor games ever.   For the thread, one thing I can't resist is good textures, high resolution, not every console is capable of it, i'm only talking about next gen high quality graphic consoles or platforms like pc. Well I also like fun factor, not every exclusive i've played is even remotely fun, just cause 2 for me was pure fun. Fun factor derives from gameplay and the gameplay mechanics. Not every game has it down right. "

Games that say "Rockstar Games Presents" on the cover.
 
Yeah, love them open world games. A good story as well.

" There is no single feature that can make me want a game. "

" @MysteriousBob: If you read my post earlier which you didn't pressing reply, I also said I like good gameplay. So you piss off. "