> It certainly looks odd, that 30/7 day sorting seems to only include new games.
Same. If number of downloads/visits are large enough, then sorting by "number within the last X days" might be quite useful.
> horror is just popular
It may as well be very true. Well let's say pizza is popular, doesn't make a buffet particularly attractive, when everywhere you go are pepperoni and meatball pizzas, and when you ask the waiter "I feel quite gross, do you have any fruits?", he tells you to walk upstairs because that's how this restaurant works. Guess what you find there? Hawaiian. Welcome to "La buffet popolare universale"