These modes are not available in Super Smash Bros. for 3DS, although Super Smash Bros. Brawl did have a level editor. What Board Game Mode is is anyone’s guess, although something along the lines of Mario Party is feasible.
So far, Nintendo has yet to comment on these new modes, but since the game launches in just over a month, we’re bound to get some new information soon.
Super Smash Bros. for Wii U will be released on November 21st.
I fully expected a level editor, but Board Game Mode is out of left field. As a fan of Mario Party and board games in general, consider my curiosity piqued.