Easter egg

Easter eggs are usually hidden surprises or tricks. They are small surprises programmers add to their media for players to uncover, much like chocolate eggs in a real-life Easter egg hunt. Many Easter eggs are purely for entertainment. Some examples include hidden names or faces of programmers, references to other games, or messages for the player.

Easter eggs should not be confused with glitches, cheats, or techniques. Many do not alter gameplay at all, and are added on purpose.

Characters

 * From v0.8a to v0.9b, when swings his fully charged bat (or in a 1/19 chance of the same move uncharged), the text "SMAAAASH!!" will appear; this is a reference to the same effect in EarthBound.

Stages

 * From v0.7 to v0.9b on the Saturn Valley stage, Frank, a Mr. Saturn with a camera can be found; this is based off the Photo Guy and Frank West from EarthBound.
 * Exclusive to v0.9a, on the Dracula's Castle stage, the name "Qui" can be found underneath the right brick block.

Items

 * There are several food pieces that reference to other video game titles. Some of these include a Yoshi Cookie from Yoshi, a bottle of Lon Lon Milk from The Legend of Zelda, a Rare Candy from Pokémon, a sea-salt ice cream from KINGDOM HEARTS and a bowl of ramen from Naruto. The doughnut resembles Homer Simpson's favorite doughnut variant from the animated TV series, The Simpsons and the design of the french fries parodies the real-life variants from the fast-food restaurant chain, McDonald's. There were other Food pieces that were removed from the Beta version like the Cheri Berry from Pokémon, an Energy Capsule from Mega Man and a Pork Chop from Minecraft.

Website

 * On the Smash Flash DOJO!!!, a message saying "You are a nasty code-snooper!" can be read by viewing the page source.
 * At the bottom of the Smash Flash DOJO!!!, a message saying "Want to see something cool?" will appear. If the reader highlight it, the page will rotate in a full circle and redirect you to the "How to play" section.