Custom Field Functionality?

Hi all,

I’m looking for some functionality with WordPress that can deliver this kind of technology. So a lot of our posts relate to a different subject.

http://www.gamespot.com/articles/top-selling-ps4-ps3-and-ps-vita-games-on-psn-in-ma/1100-6440509/
On the left hand side you can see all the games that this article is related to and you can then click on a page where you get more information about said game.

I realise categories and tags are almost what I’m after but I’m really look to design the pages that the subject matter is on.

Hope you guys can help.