My being full of myself made this a long one.. sorry.
1) Do you tend to purchase a particular style or genre over another? Or will any PC game do as long as it's good or at least looks interesting?
I enjoy most genres; I won't simply buy something because of its genre. Though it will make the sell easier. I'll try anything that catches my interest, unless it's a 4X strategy, grand strategy or RTS. Even if one of those genre caught my eye, I know I'd likely grow tired of it very quickly, so I won't purchase.
2) All things considered and with the price being equal, what is more important to you personally when making a PC Game purchasing decision (list in order if you like!): gameplay mechanics, graphics, multiplayer or replay-ability.
1) Gameplay mechanics: No video game story, graphics or other feature makes up for horrendous gameplay. Uniqueness, excellent story (
very rare in videogames), fun characters, or neat graphics/locations/atmosphere will raise my tolerance for mediocre gameplay.
2) Graphics: Not the most important factor by any stretch, but I place it above multiplayer and replay-ability.
3) Multiplayer: The option to play with others is a decent incentive. But the concept and gameplay are what make me want to buy a game. I'd probably never decide against a purchase just because it didn't have multiplayer. Lack of online co-op did disappoint me in the cases of Rayman Origins and Trine, though it didn't stop me from purchasing in either case.
4) Replay-ability: Those who, for example, play through Mass Effect 10+ times or Chrono Trigger once a year I don't really understand. That is to say I don't understand people who endlessly replay single-player campaigns. I will replay stuff I REALLY love maybe once more or a couple more times over the years--I adore Super Mario RPG but still have only completed it three times over more than a decade. I consider replay-ability inherent to multiplayer games, so I weighed replay-ability's rank here on single-player.
I'd much rather consume the experience once, then move on. Variety is the spice of life and stuff. It's entirely different for multiplayer focused games. I'll play that over and over (or at least for significantly longer than the time it takes to play through an average singleplayer game), because the human element often provides endless variety. The gameplay changes constantly, even if it's only in minor increments, and story isn't a factor. However, in singleplayer, story is important and gameplay is more rigid (usually). A large factor that discourages me from replaying single player is lack of a salient story, or how thin-spread game stories can be. I've rewatched the Count of Monte Cristo about 50 times, but that's only 2 and a half hours. Most games have far less compelling or complex stories than that, but are also stretched out for ten times longer.
3) Would you tend to find yourself more likely to support a PC game if the developer was more active with its community, or would you not care? (any further comments or experiences here would be great)
The only reason I purchased The Witcher 2 on release, was because I wanted to support the dev for releasing a DRM-free AAA game--bought it off of Good Old Games. I hadn't even reached halfway through the first game, at that point. I also bought Rayman Origins full price on PC, because Ubi removed all their DRM off the game. Even though I've become jaded with League of Legends and Riot, their community team was exceptional in constantly improving their interaction and reaction to the community, so I bought Riot Points (pay-for currency) to support them, cause I liked them.
4) Outside of obvious console ports; do you ever think about the user interface while playing a game? Could you easily name an example of a bad UI and a good UI off the top of your head?
I think most people (as represented by the 'tards on the internet

) get waaaay too bent out of shape about controls and UI. I simply shrug and then adapt to the dev's clumsy implementations as best I can. Controls have to be REALLY awful for me them to deter me; same for the UI. Binary Domain's UI was quite bad and so was the mouse acceleration, Borderland's UI was quite bad, but I got used to it pretty quickly and just enjoyed the games. Adaption is a primary tool for playing video games, so I don't understand the degree of trouble many of the internet whiners claim to have. I DO have trouble with fighting games--however, I always had trouble playing runs or holding beats on musical instruments no matter how much I seemed to practice, so my fingers might just be retarded. Almost 200 hours in Street Fighter 4, still can't do ANY combo with above 50% consistency. I still don't whine about it (too much), and it doesn't stop me from having fun (usually).
Other bad UIs: Skyrim (once again, didn't really care, still really fun, got pretty quick at using their "bad" UI too), Blur (took a good 10 minutes to figure everything out with the Friend list and multiplayer lobbies, but whatever). Fallout 3 and NV, the Pip Boy is an inefficient piece of crap, but becomes less horrible once you get faster at navigating it.
Good UI: Guess I don't notice as much when it's good.
It would seem I ignored the "Outside of obvious console ports;" part of your question. Sorry, but not rewriting all that.
5) Have you ever purchased an 'indie bundle'? If yes, do you actually play all the games in the bundle or are you just supporting the developers and/or cheaply buying an individual game.
I've purchased 3? of the bundles and I bought the recent music one too. If we define "play all the games" as at least getting maybe 30% of the way through each, then no. I do try them all, and usually only finish
maybe one of them. I put in a minimum of $15 into the bundles, and usually give it all evenly to the devs (Child's Play is nice, but kinda dumb: money's better spent on other charities).
Last bundle (not counting the music bundle I bought):
Amnesia (already owned, never liked)
Bastion (have played 3 hours, it's still just an ARPG, but the narrator does help a lot)
Braid (already owned)
LIMBO (played and finished; first half is pretty meh, most early puzzles are based on you remembering things you recently passed by)
Lone Survivor (played for 30 minutes and didn't care anymore, like most survival horror)
Psychonauts (already owned)
Super Meat Boy (already owned)
Superbrothers: S&S EP (Don't like it's look, it's probably better on a touch device, I don't like traditional adventure games. Played for 10 minutes and couldn't stand it anymore)
Money distribution:
30% to Bastion, 30% to Lone Survivor, 30% to Psychonauts and 10% to the Humble Bundle team. Was mostly intending to play Bastion and Lone Survivor, so I gave them some. Already owned LIMBO on Xbox, so left them out. Loved Psychonauts, and felt they deserved some more of my money. Gave a tip to Humble Bundle so they can hopefully pay the server bills.