- Blooper: In the original advertisement when Mario kicks Yoshi, his shoe gets knocked off flying and in the next scene, both of them are on the ground as the characters are fighting.
- God Never Said That: There is a persistent belief that Peach, Wario, Pit, and Meowth (the most consistently "rumored") were planned for inclusion in Smash 64. However, outside of Bowser, Mewtwo, Dedede, and Marth, no such official source exists that states these characters were planned for inclusion.
- Marth Debuted in "Smash Bros.": For the PAL region, this was Ness's debut due to EarthBound not being released in those countries until 2013 on the Wii U's Virtual Console.
- No Budget: It's sometimes hard to notice, but the game was a mere side project for Sakurai to work on during weekends. Nobody, not even Nintendo, was expecting it to fare as well as it did. The sequels have proper budgets to go with their status as a major Nintendo franchise.
- Sleeper Hit: The original Super Smash Bros. started as a side project by Masahiro Sakurai that Satoru Iwata allowed him to do on the weekends at HAL Laboratory. Eventually Iwata became more interested in this "King of the Hill"-like fighter, and the company asked Nintendo if they could use some of their characters. Nintendo relented but remained iffy on the entire thing, keeping the budget on the game incredibly small and planning on a Japan-only release. Despite little promotion, the game took off in Japan and was brought to the United States and Europe later that year, becoming a Killer App for the Nintendo 64.
- Ur-Example: Contrary to popular belief, the original Super Smash Bros wasn't the first Platform Fighter game. That title goes to an obscure game released back in 1994 by Namco (now known as Bandai Namco Entertainment) called The Outfoxies, though the aforementioned game and the SSB games have a lot of differing quirks. Funnily enough, Namco Bandai ended up being contracted by Nintendo to develop the fourth and fifth installments.
Trivia / Super Smash Bros. 64