Why
I want to understand genre conventions when making video games. Making video games is not just about creating art, but it's also about creating money by selling a product people want. Customers that are fans of a genre should be more likely to buy your product if you adhere to the genre conventions. This doesn't mean you can't be unique, but you should understand the rules of the genre before you break them.
What
A genre is a socially agreed-upon conventions developed over time. In popular usage, it normally describes entertainment. I will be focusing on the video game genre conventions I notice in this site. Detailing demos or games, their features, control schemes, core gameplay loop, and any other features that are important to the genre or features that are unique to the game.