On the homepage, no matter what I click on in the left column, I am shown the same game. The same happens if I try to use the genre, developer, status, date or rating. I am using Firefox.

This has to be a bug, but if not, what is your intention here?
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A few minutes after posting this I realized what was happening. When I click on those links as I explained above. The change is happening "below the fold" so that I can't see it.