On landing page, I think there's a bit imbalance of space in between 1st frame and 2nd frame. And the transition between frame is a bit jumpy. Might be the scroll speed.

I must say: The look and feel is really well executed! Saw what you're trying to deliver by using the globe from 1st frame to the last.

You might need to set another colour(probably the same colour you used for footer?) for menu. As it's slightly hard to navigate at the moment.

That unique approach to the branding is really great and nicely complemented with pretty impressive transitions. Can definitely see how much of the thought process was involved in the making.

High attention to the details by micro-interactions that are happening all over the site. There are also a lot different features - e-commerce, forum, news, contest, etc. And they all seem to work very well and are very consistent throughout the whole page UI wise.

Let's not forget about the account settings page and purchase history, that are seen when user logs in.

Some minor issues UX wise:
1. The "slide to section" button. If I click it and I want to go back up, I am then forcibly moved a couple of times to the section where the button takes you.

2. The scrolling transitions and the parallax on reviews are not really smooth on Internet Explorer.

Really good job guys.

I think you guys obviously did a pretty good job in attracting the user's interest right from the home page. I like the graphics and animations and obviously they give a wow effect.

My comments will be mainly UI related, and I think that some aspects of the visual design are to be polished:
- I think the font is great, but you should have one for the headings, and another one for the paragraphs. Another possibility would be to give a lighter font-weight for the <p>. Now, the overall lacks in contrast. I feel like the text alignment could be also improved in some sections. I would also slightly decrease the line-height for the paragraph texts.
- Maybe the linear gradient in some UI elements are intentional, perhaps to give a retro sci-fi look and feel...? Looks very late 90's/early 00's to me :P
- You should definitely take advantage of the full-width, especially in the About and News pages. You would be able to let more space out things and let the graphic elements be bigger
- I quickly revamped the navigation, by adjusting the spaces between the elements and center the main part. Those are small details but they make it cleaner ;)

- Still concerning the navigation, I think that the "marketplace" label is weird (what about "store"), and it should be detached from the other navigation element (maybe closer to the cart?)- The mobile version would need more work in the scalling of the elements (mainly the fonts). The down arrow in your context seems useless to me if.

Playing with your CSS / HTML, I found that the structure could be much more light (for instance, there are classes that are injected in the element but don't do much).

To conclude, you have a good site who will be even better with numerous light adjustments. Good job and keep up the good work ;)