What are you considering when you are going to buy game?

All of the above mentioned

coop

Price, Multiplayer. Achievements

Cheap Indie with tons of achievements and high re-playability value.

And sometimes metacritic score too. 70 and above.

Price, Re-Playability, moddable (and customizable), sometimes multiplayer.

Achievements or bust.

Price - I like games on sale. The more the merrier.

Achievements - If they make sense... Hate games that have achievements for every time you click on something.

Replayability - sometimes. Important in some genres, not as much in others.

Genre - Not keen on Hidden object games, turn-based wargames generic shooters and so on... I do like RPG and RTS and story driven action games.

Story - I like a game with good story, choices, suspense,...

Production - I hate stupid bugs and nuisances that ruin my gaming experience. Like polished games with cool animations, slick menus and so on.

Indie/AAA - I'm more inclined to pay full price for great indie game, almost never preorder AAA titles - exception was Witcher 2 on GOG, but that is, in a way, an Indie game, lol.

Cult status - you may be born in 2000, but you should own Starcraft. I'm born in the 80s, so you know...

and so on...

Y N Y

Price and enjoyment.

Achievements, then Price, then genre, then maybe reviews and finally lack of multiplayer and co-op because I don't like them due to bad internet.

Is it on sale? Yes? ---> BUY!

No? ---> Wait for a sale.

1. If it has achievements.
2. If SP is good.
3. If my friends have it as well.

all above + multiplayer and if people actually play it

If I'll actually play it

Price, Metascore and if its fun.

Price - It's important.
Genre - I enjoy some game genres more than I others, puzzle games are one of my personal favorites.
Re-playability - This goes along with price, if its something I will probably only play through once, I would rather not spend too much, while if it's likely that I will play it with greater frequency, then I obviously will be willing to pay more.

Price?
Achievements?

is it fun,whats the price,will it work on my shiti computer?

All of the above + coop + compatibility with my current hardware.

buy... games?

Sadly right now, and for the next while, its all about one thing. The price :-(

Price and genre/type are the main factors for me. It has to be a game I think I'm going to like from its description, trailers, etc., at a price I'm willing to pay (which usually means waiting for a sale). I have to be able to play it, too, so I'll usually look at the system requirements just to make sure they're not above my current machine. I also don't do a lot of multiplayer or co-op, so I'll tend towards games that have a single player mode. To a lesser extent, reviews/ratings and other people's opinions can help, especially if they're familiar with the game; those can help guide me towards generally better games. I don't really look at things like achievements or re-playability though.