1. Rock Pikmin were planned but ultimately put on hold. Its unknown if development had begun on these Pikmin, but they likely would have been added had there been more time. Rock Pikmin would have been heavy with short reach but high attack power.
2. Co-op play was planned for Smash Run, but the 3DSs processor was unable to display multiple fighters on the same screen, so the mode was dropped.
3. Co-op power-ups for Smash Run were also scrapped alongside co-op play.
4. Sakurai initially considered including four versions of each Special. One slide displays Mario launching a double fireball, a feature not present in the retail version.
5. He also considered adding special rules to 4-on-4 Team Battles, similar to the multiplayer mode in Kid Icarus: Uprising, Light vs. Dark, but no such features were implemented.
6. Mii Fighters Specials were originally going to be included as in-game rewards (much like other characters Custom Specials), but they ended up as default content.