Answers below are either my experience or paraphrased answers from GMG.
FAQs
I want to help update the OP, what are the content and formatting guidelines?
I have made many changes to the OP in order to streamline the information and enable people to better find the pertinent information they are looking for. The OP is now divided into four distinct sections which will be explained below. If you want to help with updating the OP (greatly appreciated) please follow the below guidelines to keep things consistent.
Highlights
Highlights is where all time-limited or extraordinary deals go. These are at the top since they are the deals most people are interested in. The format should be Linked Game Name - discounted price (Notes such as Steamworks)
vouchercode for discount%/$. List order should be alphabetical with DLC following base game.
Example: South Park: The Game $99.99 (Steamworks) with voucher code
SOUTH-PARK-GAME for 10% discount
Steamworks Pre-order Games
This section is simply a list of all Steamworks pre-orders available on GMG. A price will NOT be listed next to a title unless it is a current deal. Having MSRP (or near) listed next to all titles adds unnecessary clutter. If a pre-order game is a highlight deal it will be in the Highlights section and also have it's price listed next to the title in the pre-order section as well as any necessary voucher code. List order should be alphabetical with DLC following base game.
Example: Darksiders 2 $99.99 with voucher code
DARK-SIDE-GAME for 15% off
Non-Steam Pre-order Games
This section will work the same as the Steamworks Pre-order section. One notable exception is adding a note after the price for important information such as "requires Origin". List order should be alphabetical with DLC following base game.
Example: SimCity $99.99 (requires Origin) with voucher code
SIM-CITY-GAMES for 15% off
Notable Steamworks Games
This section is a list of notable Steamworks games and will be handled the same as the pre-order sections. List order should be alphabetical with DLC following base game.
What is Green Man Gaming?
Green Man Gaming (GMG henceforth) is a digital distributor of PC games similar to Steam or Origin. They are located in the UK.
When is GMG getting X game?
No one knows, when information is available it will be added to the OP if relevant.
I only buy my games on Steam, why should I care about these guys?
Good question, my fellow Steam luddite! The reason to care about them is because of Steamworks games. Steamworks games have the ability to be purchased anywhere but still be registered on Steam just like you bought it on Steam. This includes games such as the recently released like Duke Nukem Forever and the upcoming Deus Ex: Human Revolution.
I don’t live in the UK, will these keys still work on my Steam account?
Yes! The keys from GMG are region free.
Does GMG charge for pre-orders right away or when the game releases?
Pre-orders are charged as soon as the order is placed.
When will I receive my key for a pre-order?
The official policy is morning of release date. However, the 3 keys I have received have been a couple days before release allowing me time to preload. In reality when you receive your key will probably fall somewhere between the two.
What if I buy a non-Steamworks game? Do I have to use a 3rd-party program to launch and manage my games?
GMG uses their proprietary software Capsule, to download, install and play other games.
What is this trade-in thing I see mentioned on the site?
GMG offers the unique option of trading in games you no longer wish to play. You can see the trade-in value of a game by going to the store page of that game OR logging in and clicking the link at the top that says “Your Games”, the number next to it is the total trade-in value of all of your games.
PLEASE NOTE THIS DOES NOT WORK FOR STEAMWORKS GAMES AND IT WILL SAY SO ON THE PAGE WHEN YOU PURCHASE.
Can I get a refund for a preorder if I have not received a key yet?
Refunds are handled on a case by case basis. Generally they don't offer refunds on Steam titles just like most other major sites, but users are free to ask. The best way to get a refund process is to give your reason when you make a ticket.
What does the price-match guarantee mean? The wording is vague..
I spoke with GMG about this and they will be updating the verbiage soon, I will update this when I have a new statement. Right now the gist is that the only match permanent price drops, not promos.
Are GMG keys region locked?
[quote name='Green Man Gaming']
"It's very, very rare for a publisher to region lock digital keys. In fact, I can only think of one or two occasions ever where this has happened in years of buying games online. When there is a threat of region locking, our product pages, social media and the forums make it clear of any potential problems.[/quote]
What happens if I preorder a game and you lower the price/add a voucher code?
[quote name='Green Man Gaming']
As our offers are usually VERY competitive, we don't price match our own offers and vouchers. However, if a title is reduced in terms of RRP, we'll refund the difference.[/quote]
What the is wrong with this ing site it won’t work with my ing PayPal?!
First of all, take a deep breath and relax. GMG recommends that your email account on GMG match your PayPal email address. This is mainly an issue with international orders and overzealous anti-fraud measures.
Ok forget PayPal, I am trying to use my Credit Card and it is asking for my social security number, wtf?!?
In some instances your bank or credit card will ask for further verification that you are really you. Again, this is mainly due to international transactions and fraud prevention. If you are required to enter further information the verification page will be framed into your purchasing window. Fill it out and proceed with your order.
NOTE: Sometimes this may say your transaction failed but it actually didn’t. Before trying to purchase again, go to “Your Games” and see if the game shows up in your list.
I just looked at my bank statement and I have an international transaction fee with my GMG order!
If you are purchasing from outside of the UK, your bank, credit card company or PayPal may charge you a currency conversion fee. These fees usually range from $0.20 to $1.50 depending on the price of the game.
I am still having issues, what should I do?
The first thing you should do is fill out a
support ticket.
If you do not hear back from them in a reasonable amount of time you can bother them on
Twitter or
Facebook.
You can also call them at +44 (0)330 500 1515 Monday - Friday, 9-5 (BST). Their support is not outsourced so if you call you will talk to one of thweir employees directly. Being an international call you will probably want to use Skype or something similar to keep costs down.
My experience with their support is that they have been really helpful and responsive.