
Updated to version 1.1 on July 4, 2025!
Update notes:
- • Added a new item: Electric Flower – fires straight-line projectiles with high damage but limited range.
- • Fixed a bug where summoned objects from certain bosses would retain their sprites after being frozen.
- • Fixed supply issues in the rest areas before certain boss fights.
All bosses in this work were developed by members of the Hel Studio. The majority of them were created by Mr.Cutter (a.k.a 霽晴初麗_Haru), with the rest contributed by HengShao, IceNightX, and Slash-18. We can confidently say that this is one of the highest-quality Boss Rush episodes ever made in the SMBX community.
Trailer
Original link: https://www.youtube.com/watch?v=UzSqoKlxit0
Mode Introduction
This episodes offers a total of four modes to choose from, two of which feature multiple difficulty levels. These are:
All-Star Mode:
- • All-Star Boss Rush – Take on 19 basic bosses in a fixed order!
• Super All-Star Boss Rush – Conquer 19 intermediate bosses in a fixed sequence!
• Ultra All-Star Boss Rush – Survive 19 tough bosses in a fixed order!
• Ultra All-Star Boss Rush X – Face 19 vicious bosses in a fixed sequence!
• Ultra All-Star Boss Rush Deluxe – Endure an epic marathon of 59 bosses in order!
- • Roguelike Boss Rush – Battle 10 randomly selected bosses in a row!
- • Survival Boss Rush – Take on 6 random bosses in succession, with no recovery between rounds!
- • Four Heavenly Kings – Defeat 5 formidable bosses in sequence!
• Super Four Heavenly Kings – Defeat 5 ultra-formidable bosses in sequence!

Rules Introduction
Before selecting a mode to challenge, you may choose any items in the lobby. Once a challenge begins, the items in the lobby will no longer be available. In the rest area before each boss fight, three random items will be provided (except in Survival Mode). Players may choose to leave at any time in the rest area, and the current challenge progress will be automatically saved. If you are defeated in a boss fight, your progress will not be reset; instead, your death count will increase by one, and you will return to the lobby, where you may continue your challenge.
In addition, there's an Expert Mode – which can be activated and applied to all modes above: One chance. No retries. Any failure means INSTANT RESET.
Feel free to take on these bosses in any way you like — go all out! You are welcome to share your best records in this thread!
Preview Video
Original link: https://youtu.be/hclsdE8_a0c?si=Dmo7jx1CQQ5oCWzw
Credits
- Spoiler
- SMW Bowser: Slash-18
Bowser Jr.: IceNightX (the boss is originally StarLudwig, reskinned and edited by Mr. Cutter)
Queen B., Dark Funnier & 'the Last Boss in the Super Four Heavenly Kings Mode': HengShao
All else: Mr. Cutter
Download
https://drive.google.com/file/d/1TTaN03yqxkA-8dtsVtbu_WUJdxjd4ihB/view?usp=sharing


