All-Star

All-Star, more commonly called All-Star mode, is an unlockable 1-P player mode in Super Smash Flash along with Classic and Adventure modes. It is a game mode that first appeared in Super Smash Bros. Melee and later in Super Smash Bros. Brawl and both Super Smash Bros. for Nintendo 3DS and Wii U. The goal of All-Star is to defeat every playable character in the game with a limited amount of recovery items, those being three Heart Containers that, unlike in Group mode, will heal all accumulated damage.

In Super Smash Flash
In All-Star mode, the player must fight all 28 characters in the game roster. They are randomly selected each round, like in the Melee version. At the start, the player must fight one character, then advance to two, then to three. At the end, you fight 3 s with 8 lives each. When completed, you unlock the stage. Similar to Melee and Brawl, there are three Heart Containers but instead these will only heal 100% of damage instead of the full restore heart containers in the previously mentioned games. Because of this, All-Star Mode is significantly harder in SSF than in Melee and Brawl.

In Super Smash Flash 2
All-Star was initially confirmed to return in Super Smash Flash 2 via the official FAQ posted in the McLeodGaming Forums, with some hints regarding the fighting order been randomized again like in Melee and SSF. This question has long been removed from the post, though.

Trivia

 * As of v0.9b of the SSF2 demo, there are unused files in Super Smash Flash 2 pertaining to All-Star, including a button to start the mode.