| 880user088 said: little BIG planet enough said :) |
It still is 3D because the side-scrolling isn't truly flat; your Sackboy can actually go back further from the screen and forward. There's depth to the side-scrolling aspect of the game in which the characters can shift forward and backward to the screen, so it is not truly a 2D game (even though it's a side-scrolling platformer). 








