Board Thread:General Discussion/@comment-6122870-20140318163542/@comment-5693502-20140318233130

The way the concept of towers, floors and levels is presented differs massively in Sword Art Online and Tower of God.

In SAO, the world presented is extremely similar to an inescapable video game with the tower itself resembling the playable world and each floor representing levels that one progresses in as they get further through the game. This might sound crude but, put simply, SAO could equate to a Platform Adventure Game except in the form of a manga.

However ToG presents the world as reality. People actually live inside a single Tower with Floors being the only thing separating them all. The stronger you are the higher up the Floors you can go. ToG could equate to a Corporation within a skyscraper except fictionalized and made awesome. In the Corporation the better you are at your job, the higher the floor you'll work at. In the Tower the more tests you pass, the more Floors you'll climb.

Barring the fact that they mention a tower and floors, the two series have absolutely nothing in common. At all. (And ToG is obviously much better hehehe)