There is a major issue with Steam at the moment that has impacted a lot of titles where by the 'buy' button has disappeared from the Steam page. Unfortunately our title is one of those impacted by this - so as of now, thanks for looking our game up, but you can't buy it :(
Please go ahead and add People Cu3ed to your wishlist, and as soon as Valve get Steam working again - you'll be able to buy and play the game.
