All-Star Rest Area

The All-Star Rest Area is a special stage used to warp between battles in All-Star in Super Smash Flash. It is based on the stage of the same name in Super Smash Bros. Melee that serves the same purpose.

In Super Smash Flash
This stage consists of a single platform with a cave mouth at the center. The sprites are the same as those used for the top platform in Floating Islands. There are also three Heart Containers on the left, and upon using one, it will not return for the remainder of the mode. Players can also fall off the stage and self-destruct without losing, but they will respawn next to the cave and their damage is kept. If the player goes through the cave while healing, the healing will stop and the next battle will start.

Origin
As mentioned, the All-Star Rest Area is based on the stage of the same name in Super Smash Bros. Melee, which serves the same purpose in its own All-Star mode. The concept of a resting area between fights with optional healing items comes from Kirby Super Star, with both The Great Cave Offensive and The Arena sub-games as possible inspirations.