All-Star Safari is a mode in All Star Smashers. In this mode, the player gets pitted against every playable character in the game. The fights are separated into distinct rounds, and a rest area with a limited number of recovery items available between rounds. The mode is automatically unlocked upon unlocking every fighter.
All-Star Safari has 13 stages. The number of opponents per stage increases as the player advances. The opponents are selected from the order of their moveset's release, so that each character is fought once. Each opponent wears one of their first three alternate costumes, unless the player is wearing one of those three costumes, in which case that character can wear their default costume, but not the costume the player is wearing.
The player's percentage does not revert to 0% between battles. Instead, the All-Star Safari Rest Station contains three Heart Containers, which the player can use to restore health between stages. Once one of these Heart Containers is consumed, it does not return for the rest of the mode. These Heart Containers, unlike normal ones, recover 999% damage instead of only 100% damage.
Other than the Heart Containers in the Rest Area, recovery items such as Personal Food do not appear at all in the mode. However, Oscar the White Tiger's Chubby and Papa Louie's pizza can still be used to recover health.
As a reward, the player can also collect random trophies that appear after every three battles; trophies that have not been collected are prioritized. Upon clearing All-Star Safari, the player unlocks a trophy of the character they used that can only be obtained this way or by playing 300 Vs. matches with that character; for all characters, this trophy depicts them in a non-default costume.
Each stage is fought on the home stage of the first opponent in the group; for example, if the opponents were Billy Slaven, MimeFan and Steve & Blue, the stage would be Basildon Town Centre.
Unlockable stages that have not yet been unlocked are still used.