Portals are pages that are as similar as Main Page or Community Portal for certain areas. But that's not all. You can add some contents such as Featured Articles, Requested Articles such as Platform Racing 2 Wiki:Requested Articles, News about certain areas, etc. They're more freedom than Main Page. If you interested in certain areas, you should join the portals, or create yourself.
Portals that exist now Edit
|Name||Creator||Date of Created|
|Platform Racing 2 Wiki:Community Portal||User:Default（talk|log）||January 28, 2009|
|Portal:Items||User:9K（talk|log）||March 4, 2015|
|Portal:Hats||User:9K（talk|log）||March 15, 2015|
|Portal:Blocks||User:9K（talk|log）||March 22, 2015|
|Portal:Jiggmin's Games||User:9K（talk|log）||April 16, 2015|