The Revenge of Subspace is the adventure mode of Super Smash Bros. Royale. It is like the Subspace Emissary.
- Title: The Airships
- Enemies: Goomba, Koopa, Paratroopa, Hammer Bro
- Music: Airship Theme (SMB3)
- Bosses: Bowser (mini-boss)
- Characters Playable: Mario , Luigi, Daisy, Yoshi, Birdo
- Characters Unlocked: Mario
Mario, Luigi,Peach, Daisy,Yoshi and Birdo are having a picnic in the Mushroom Kingdom. Suddenly, Bowser and a fleet of airships come seemingly out of nowhere blasting Toad Town, Peach's Castle, and more. Mario and Luigi go and try to stop him. at the end of the level, Bowser is fought. A cutscene then plays where Bowser blows up a bomb, launching Mario and Luigi into the air. Bowser then takes out a trophy cannon, shoots Peach, and takes his prize.Bowser doesnt notice that Daisy , Yoshi, and Birdo witnessed him take Peach.
- Title: The Beach
- Enemies: Blooper, Cheep Cheep, Goomba, Toady Bloyster, Wollywog
- Music: Beach Bowl Galaxy
- Bosses: Gooper Blooper
- Characters Playable: Mario and Starfy
- Characters unlocked: Starfy
Mario wakes up to Starfy shaking him. He's on a beach, and can see Bowser's fleet in the distance. Mario quickly explains to Starfy what happened, and Stary agrees to help. They venture across the beach to try and find a way to get over there. Eventually, they find a boat chained to a pole so it doesn't float away. Starfy grabs what he thinks is the rope, but it's actually Gooper Blooper. He is enraged, and attacks.