See this response by Raven01. So, I think for your situation, it implies that you can't add the unc version if you have the cen version.

http://www.giantbomb.com/steam/3015-718/forums/do-i-have-to-buy-a-game-twice-to-get-two-languages-534821/?page=1#js-message-5186086

You can request Steam to remove games from your account, but you would have to make a new purchase should you change your mind.

I don't know if you'll get the unc version from BundleStars, though; might be a regional thing.

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Good story - shitty game play.

First Person Platformer - 'nuff said.

Portal 1&2 - 75% off on Steam
http://store.steampowered.com/sub/7932/

Red Orchestra 2 will be free tomorrow for 24 hours

http://steamcommunity.com/games/RO2/announcements/detail/1353639133892980334

PLEASE NOTE: if you own RO2 and NOT Rising Storm, you have access to rifles ONLY in Rising Storm, not the full set of weapons.

Good to know. I don't think I'm going to bother...

I have sent a request to Steam. They haven't replied yet (there's a note about high ticket volume on the support page), but it's just been a day - I'll probably hear from them next week.

I asked Bundle Stars support, and their offer was nothing short of AMAZING (yes, in caps - I rarely use caps, but they are warranted here). They apologized that they won't be able to answer my question before the sale runs out, and then gave me the code for free so that I have a chance of getting the uncensored version, with no risk of losing money if Steam ends up giving me the censored one. That's exceptional customer service!

Yeah it usually takes them 4 days minimum to respond to tickets in my case. One time it took about 3 weeks for them to resolve my issue, but they've always removed games from my account for me on request.

Super Panda Adventures is PWYW (for Desura and Greenlight on Steam) on Daily Indie.

I was gifted this one somewhat recently, and I was pleasantly surprised! It looks very simplistic, but it's kind of like Treasure Adventure, in that it's more than just platforming -- you have a story and quests.

Wow, that's awesome! BundleStars just got a huge + in my book :]

Also, a bunch of bundles on Indie Gala
http://store.indiegala.com/index.php/bundles.html

Wow! Very impressed with their customer service tbh

GamersGate has some interesting DRM-free games on sale

http://www.gamersgate.com/DD-112/the-experiment-112

http://www.gamersgate.com/DD-SH/space-hack

http://www.gamersgate.com/DD-7KC/seven-kingdoms-conquest

http://www.gamersgate.com/DD-DAEM/daemonica

http://www.gamersgate.com/DD-UPD/ugly-prince-duckling

http://www.gamersgate.com/DD-WKR/warrior-kings-remastered

http://www.gamersgate.com/DD-CI/culpa-innata

http://www.gamersgate.com/DDB-BM12/battle-mages-and-battle-mages-sign-of-darkness-bundle

http://www.gamersgate.com/DD-GLISE/gods-lands-of-infinity-special-edition

And most notably

http://www.gamersgate.com/DD-GREY/gray-matter

http://www.gamersgate.com/DD-SOTSTPGE/sword-of-the-stars-the-pit-gold-edition (cheaper than GOG)

@ Impaler and Sachys: Had no idea, good to know, thanks!

Yep, that's a nice deal and this version also gives an additional Steam key.

Not only DRM free - but with a steam key as a bonus too (got it around xmas).

Are you guys saying its better to get the one which includes steam key are you? :P