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.

In Super Smash Flash 2
The stage consists of a mostly flat hard platform, with a slope at its leftmost portion. There exist three platforms in the right half of the stage, each containing healing items. The healing items, decided by the difficulty chosen by the player — Energy Tanks at Easy, Heart Containers at Normal, Maxim Tomatoes at Hard, and mere food at Insane difficulty —, are shared among the soft platforms. Lastly, there is a warp pod at the very center of the area, which activates if a player touches it while moving sideways. If a player is healing when they get sent to the battle, they will immediately stop healing, and their damage will stay where it was prior to the warping. Players are also unable to self-destruct, as there are walls and ceilings where the camera ends.

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.