500-piece French licensed jigsaw puzzle named "Super Mario contre le dragon" ("Super Mario against the dragon"), featuring a design of Bowser/King Koopa from the DiC cartoon series recolored to be yellow.
Unused enemies found in the data of Mario & Luigi: Paper Jam: a Paper Stingby as well as black and gradient green Paper Goombas. In the finished game, all paper enemies are taken from Paper Mario: Sticker Star; the Paper Stingby would have been the only entirely new enemy.
Super Mario Galaxy 2's first screen depicts Peach's Castle in the distance (top left). Reaching the castle later shows that its bridge has a slight curve (top right). However, the bridge of the first castle model has such an extreme curve that Mario would slide down it (bottom).