Bowser's Gnarly Party
| Bowser's Gnarly Party | |||
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| Appears in | Mario Party 4 | ||
| Difficulty | ★★★ | ||
| Availability | Unlocked by winning on the board in Story Mode | ||
| Description | "A hard map plotted by Bowser." | ||
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- “Welcome to Bowser's Gnarly Party! I'm a Koopa Kid. It's my board. I do what I want! I built this board to celebrate Master Bowser's greatness! You'll love it, or I'll tell on you! Master Bowser is the best! If you don't see him now, you'll certainly see him later! Bwaha!”
- —Koopa Kid, Mario Party 4
Bowser's Gnarly Party is a board located above a sea of lava in Mario Party 4. It is hosted by Koopa Kid. He built it in honor of Bowser's greatness and wanted the players to have fun on it – whether they wanted to or not. Here, Koopa Kids are everywhere, and are in charge of the games and shops. In the very center of the board, a giant scorched Bowser Shell can be seen, surrounded by a building that resembles the Colosseum.
The main attractions of this board are the two stone bridges and Bowser. Every time a stone bridge is crossed, pieces of it will crumble off. When it is crossed three times, it collapses and a new one appears leading in the other direction.
Bowser is always on his platform somewhere on the board, waiting for a character to pass him; he changes his position every time a player buys a Star from Koopa Kid. He does different things to players depending on what size they are. When a player reaches him at normal size, he takes away half of their coins, or gives them fifty coins if they have none. If a player reaches him while miniaturized, he uses his fire breath to send them to a different starting point in the middle of the board. If a player gets to him in their mega form, he challenges them to either Bowser Wrestling or Panels of Doom. If the player loses, half of their coins are taken away and Bowser still remains on the board. Victory results in Bowser leaving the board until the next Star is bought; he will then reappear and change his position. If a player reaches him while wearing the Bowser Suit or with no coins, he gives them 50 coins.
Every few turns, Bowser uses his magic to shrink everyone for that turn, also disabling the players' ability to use items, similarly to a MiniMega Hammer.
Landing on any of the Happening Spaces located behind the Gates will cause the Bowser head statue in front of the spaces to breathe fire, destroying one of the player's items.
The Item Minigame of the board is Koopa Kid Shuffle (Mini-Bowser Shuffle in the British English localization). A Koopa Kid puts an item in each of three boxes and then shuffles them around. After that, the player chooses one of them. However, the player does not get the item in the one they choose; instead, that box becomes locked. After eliminating two boxes, Koopa Kid gives the item in the remaining box to the player. The Coin Minigame, Brake Bullet Bill, involves a Koopa Kid shooting a Bullet Bill at the player, and the player must mash 
to slow it down with their hands. The faster the player mashes , the shorter the speeding bullet will fly, and the more coins the player will be awarded as well.
In Story Mode, if the player beats their opponents on this board, this board will be unlocked for play in Party Mode. Bowser then challenges them to The Final Battle!; once beaten, the player completes Story Mode.
Spaces
| Type of Space | Number of Spaces |
|---|---|
 Blue Spaces |
56 |
 Red Spaces |
4 (0 during the last five turns if the Red Spaces turn into either Bowser Spaces or Fortune Spaces) |
 Happening Spaces |
6 |
 Mushroom Spaces |
16 |
 Warp Spaces |
2 |
 Battle Spaces |
4 |
 Bowser Spaces |
4 (8 during the last five turns if the Red Spaces turn into Bowser Spaces) |
 Fortune Spaces |
2 (6 during the last five turns if the Red Spaces turn into Fortune Spaces) |
| Total of Spaces | 94 |
Gallery
Names in other languages
| Language | Name | Meaning | Notes |
|---|---|---|---|
| Japanese | クッパパーティ[?] Kuppa Pāti |
Bowser Party | |
| German | Bowsers Krawall-Kirmes[?] | Bowser's Riot Fair | |
| Italian | L'Arena di Bowser[?] | Bowser's Arena | |
| Spanish | El cráter de Bowser[?] | Bowser's crater |
Trivia
- If someone lands on a Bowser Space while Bowser can be seen standing nearby, he will jump out of view before landing on top of them. Once the event is done, Bowser will jump back to his position.
