ScreamPark is a multiplayer mode in Luigi's Mansion 3 similar to ScareScraper. It is available from the start of the game and can be played before the player even begins Story Mode. ScreamPark can be accessed at any time from the title screen or in Professor E. Gadd's lab. Its name is a play on the term "theme park".
Like ScareScraper, ScreamPark can be played with up to eight players, divided into two teams: a team of Luigis and a team of Gooigis. Up to four players can be on each team. The colors for the different Luigis and Gooigis are green, blue, orange, and pink.
There are six game modes in ScreamPark: Coin Floating, Ghost Hunt, Cannon Barrage, Tricky Ghost Hunt, DodgeBrawl and River Bank. In Coin Floating mode, players must collect coins in a pool while dodging falling explosives. In Ghost Hunt mode, players must catch ghosts in a graveyard to earn points. In Cannon Barrage mode, players must fire cannonballs at targets to earn points. Meanwhile in Tricky Ghost Hunt players have to catch ghosts in a casino to earn points, while in DodgeBrawl they have to defeat the other team by knocking out everyone on it with fruit. Finally, in River Bank, players need to collect coins on a river while avoiding the bombs, spikes and waterfall to earn points.
In every game mode except DodgeBrawl, the player or team with the most coins or points at the end wins.
In Coin Floating mode, players must collect falling coins in a hotel pool while avoiding falling explosives. Each Luigi and Gooigi is in a floaty which is controlled with Poltergust G-00 controls. If one of their floaties hits a spike ball or bomb, it pops and they are thrown out of the pool, dropping all their coins into the water. They must then blow up another one by pressing repeatedly to get back in. The Luigis' floaties look like swans, while the Gooigis' floaties look like dragons. The player or team with the most coins at the end wins. Each round lasts two minutes.
Occasionally, a Super Star appears and bounces around in the pool. If a Luigi or Gooigi grabs it, they become temporarily invincible and are safe from explosives. While invincible, players can also ram into players on the other team to pop their floaties to send them out of the pool.
In Ghost Hunt mode, players must catch ghosts in a graveyard to earn points. Goobs, Hammers, and Golden Goobs appear and can be captured. Goobs are worth one point each, Golden Goobs are worth three points, and Hammers are worth twelve points. Golden Goobs can be found in glowing gravestones. The player or team with the most points at the end wins. Each round lasts two minutes.
Usually, the gates are locked, but they will unlock automatically after a while or if someone finds the hidden key in one of the gravestones. When the gates are unlocked, more ghosts start appearing, including Hammers.
In Cannon Barrage mode, players fire cannonballs at targets to earn points. Regular targets are worth one point each, while golden targets are worth three points. The player or team with the most points at the end wins. Each round lasts three minutes.
Players must load cannonballs onto their team's cannon by vacuuming them up, placing them into the cannon, then pressing near the cannon to fire the cannonball at a target in time. Rare golden targets sometimes appear and move behind regular targets, making them harder to hit. Sometimes Goobs will appear holding cannonballs. Players can also steal cannonballs from other players by using a Suction Shot.
Tricky Ghost Hunt
In Tricky Ghost Hunt mode, players must catch ghosts in a casino style room to get points. Goobs, Hammers, Slinkers and Golden Goobs appear and can be captured. Goobs are worth one point each, Oozers are worth two points, Golden Goobs are worth three points, Slinkers are worth four points, and Hammers are worth twelve points. Golden Goobs can be found in glowing gravestones. The player or team with the most points at the end wins, and each round lasts three minutes.
Unlike the normal Ghost Hunt mode however, this version adds in electric panels that shock the player if they're on them when they activate. These randomly pop up on the floor as the game goes on, and can be demonstrated in the game's intro cutscene.
Additionally, Polterpup also appears here. If Luigi flashes the Strobulb at him in game, he'll drop a power up for Luigi, usually the Super Poltergust. This only lasts about 20 seconds here, and will need to regotten via the same means after it runs out.
There is also an event where all the panels flip over at once, which summons multiple Golden Goobs for the players to battle. This event usually happens near the end of the game, when only 10-20 seconds are left on the clock.
In DodgeBrawl, players must shoot fruit at members of the other team to win, with the goal being to knock out all of the rival team by hitting them three times. However, because they're unable to leave their side of the arena, and because said fruits fall apart after bouncing too many times, good aim is cruicial here. Players also need to be aware of any falling bombs that appear too, since they'll explode after a short time and damage any players nearby.
Any players that get hit three times fall unconscious, but can be revived by a teammate in the same way as in the ScareScraper. Each round lasts a maximum of 3 minutes, but can end sooner if everyone on one team is defeated.
If Practice Mode is selected here, the player will be pitted against a team of four Gooigis. However, these Gooigis don't move, nor do they do anything to dodge their attacks or fight back. The player can still lose by getting hit by the bombs though, making this the one game where the rival 'team' can technically win in single player.
In River Bank, the players must collect falling coins on a river, while avoiding the falling logs and bombs in the process. If they get hit by said bombs, hit the spikes on the left or right of the river or fall over the waterfall, their floatie will break and all coins will be lost, forcing them to inflate it and try again. The team with the most points at the end wins, and each round lasts 3 minutes.