When Showdown is in the fourth Event Slot, it will have a modifier active. These introduce dynamic new elements to the match. They rotate along with the map.
Meteors rain down on players. They can fall anywhere on the map, and they deal 2000 damage to any Brawlers they hit while also destroying walls. Meteors also end any attack a Brawler is using. As the match goes on, meteors will begin to fall increasingly frequently. Avoid them and try to use them to your advantage by using them to trap enemy Brawlers.
An energy drink occasionally spawns somewhere in the map. A small circle marker will appear shortly before it spawns to indicate the spawning location. If you pick it up, you deal 3 times more damage and move faster. However, your health is unaffected, so be careful! This effect does not last very long so make the most of it. As the match goes on, Energy Drinks will begin to spawn increasingly frequently.
A Robo Rumble boss occasionally spawns and attacks Brawlers, walking toward the nearest one even if they are hiding in a bush. It does not have the rockets attack and its melee attack deals less damage. A marker will appear to indicate where the Robo Boss will spawn. As the match goes on, Robo Bosses will begin to spawn increasingly frequently. If it is defeated in Showdown, the boss will drop several Power Cubes.
A large ring of green mushrooms spawns, creating an area that heals any players for 1000 health per second. This is enough to perfectly counter Showdown's poison. It lasts for a couple of seconds before disappearing again. As the match goes on, Healing Mushrooms will begin to spawn increasingly frequently near the Brawlers.