The Molten Fortress is a sub-world found in the Light Realm within Adventure Mode in Super Smash Bros. Ultimate. It is located in the north central region above the Cliffside Rapids, and unlike other sub-worlds in the Light Realm, it does not require a certain type of Spirit to reach it. It is themed after the castle stages within the Super Mario series, and as such, P-Switches and Pipes are required for use in order to progress to the boss, Giga Bowser.
Spirits
Spirits are ordered by when they are encountered on the map, up until the boss.
| Spirit | Battle parameters | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. | Image | Name | Universe | Enemy Fighter(s) | Type | Power | Stage | Rules | Conditions | Music |
| 62 |  |
Mechakoopa | Super Mario | •Tiny Bowser (×4) | Grab | 3,800 | Mushroom Kingdom U (Slide Lift Tower) | N/A | •The enemy starts the battle with a Bob-omb | |
| 1,059 |  |
Juste Belmont | Castlevania | •Richter | Attack | 4,200 | The Great Cave Offensive (Battlefield form) | •Hazard: Lava Floor | •The floor is lava •The enemy has increased move speed |
Awake |
| 642 | .png){kind=small} |
Leif | Fire Emblem | •Roy | Attack | 9,300 | Castle Siege | N/A | •The enemy can unleash powerful critical hits at random •The enemy heals over time | |
| 893 |  |
Shadow Man | Mega Man | •Greninja (×3) | Shield | 3,500 | Norfair (Battlefield form) | N/A | •The enemy's neutral special has increased power •Stamina battle •The enemy favors neutral specials | |
| 485 |  |
Ho-Oh | Pokémon | •Curry Charizard | Neutral | 13,900 | Kalos Pokémon League | N/A | •Fire and explosion attacks aren't as effective against the enemy •The enemy breathes fire | |
| 712 |  |
Twinbellows | Kid Icarus | •Giant Duck Hunt | Attack | 4,100 | Find Mii (Ω form) | •Curry-Filled | •The enemy breathes fire •The enemy is giant | |
| 61 |  |
Kamek | Super Mario | •Inkling (x4) | Grab | 3,300 | Mushroom Kingdom U (Slide Lift Tower) | •Easy to Launch •Item: Star Rod |
•All fighters are easy to launch after a little while •Reinforcements will appear after an enemy is KO'd •The enemy starts the battle with a Star Rod | |
| 498 | Groudon | Pokémon | •Giant Bowser | Attack | 4,700 | Norfair (Battlefield form) | •Hazard: Lava Floor | •The floor is lava •The enemy is giant | ||
| 1,227 | Aisya | ASH: Archaic Sealed Heat | •Lucina | Shield | 2,500 | Bridge of Eldin | •Assist Trophy Enemies (Shovel Knight) •Bob-omb Festival |
•Bob-ombs will rain from the sky after a little while •Hostile assist trophies will appear |
Attack - Soma Bringer | |
| 656 |  |
Lyon | Fire Emblem | •Robin •Giant Ridley |
Grab | 3,700 | Unova Pokémon League | N/A | •Reinforcements will appear after an enemy is KO'd •The enemy is giant (referring only to Ridley) | |
Boss
The boss of this sub-world is Giga Bowser. Defeating him grants you the Giga Bowser spirit, the weakening/destruction of Galeem's shield depending on the other sub-worlds defeated, and Bowser as a playable character.
| No. | Image | Name | Type | Power | Stage | Music |
|---|---|---|---|---|---|---|
| 1,097 |  |
Giga Bowser | ??? | ??? | Final Destination | Giga Bowser |
Captured Fighters
There are two fighters that can be freed within this sub-world. Both are from the Mario universe, and one is required to free, as it is locked behind the boss.
| No. | Name | Type | Power | Stage | Music |
|---|---|---|---|---|---|
| 13 |  Peach
|
Grab | 7,500 | Mushroom Kingdom U | Fortress Boss - Super Mario World |
| 14 |  Bowser
|
There is no fighter battle for Bowser, this fighter is obtained after defeating Giga Bowser | Final Destination | Giga Bowser | |
Chests
Two chests can be found in this sub-world.
| Type | Item Name | Location |
|---|---|---|
| Music Track | Melty Monster | On the most-right path to Peach's battle |
| Snack | Snacks (L) x2 | Next to Lyon's spirit battle |
Trivia
- Bowser is the only sub-world character required to be unlocked through a boss, in this case, Giga Bowser.
- This applies to both the Light Realm and Dark Realm.