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Mario & Luigi: Brothership
Dueling Geniuses Side Quest Walkthrough
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Dueling Geniuses is a side quest in Mario & Luigi: Brothership that can be started on Shipshape Island after completing Jellyfish Island. Read on for a full walkthrough of Dueling Geniuses, including its location, unlock requirements, and rewards.
List of Contents
Dueling Geniuses Location and Unlock Requirements
| Dueling Geniuses Side Quest | |
|---|---|
 Seems like Adaphne's working on something. What exactly would a genius like her make? This is a limited-time quest |
|
| Unlock Requirements | Complete Jellyfish Island |
| Quest Start Location | Shipshape Island |
Limited-Time Special Quest
Dueling Geniuses is a special quest that must be completed before a certain point in the story. Once this quest is unlocked, it is highly recommended to do it immediately before progressing the main story any further.
Limited-time quests will disappear upon progressing the story, and you will be unable to complete them for the rest of your playthrough.
Unlocked After Completing Jellyfish Island
After you complete Jellyfish Island, you will be able to find this side quest on Shipshape Island. Talk to Adaphne at Shipshape Island in order to start Dueling Geniuses.
If this side quest doesn’t appear for you after you return to Shipshape Island from Jellyfish Island, you may need to progress the story a little bit.
Recommended to Be Level 35
This side quest involves defeating enemies to complete it. It is recommended to have Mario and Luigi to be at least level 35 to easily complete this quest.
Dueling Geniuses Walkthrough
| Dueling Geniuses Quest Objectives |
|---|
Talk to Adaphne
To start the quest, find and talk to Adaphne. Her location will depend on the Engine you selected earlier in the game.
If you chose Technikki's Engine, Adaphne will be at the club on Jellyfish Island; if you chose Adaphne's Engine, she'll be on the western side of Shipshape Island.
Technikki or Adaphne? Which Engine Should You Choose?
Obtain the Technikki Scope Deluxe
Next, speak with Technikki to obtain the Technikki Scope Deluxe. Like Adaphne, her location depends on your earlier choice for the Engine.
If you chose Technikki's Engine, you’ll find her on the western side of Shipshape Island; if you chose Adaphne’s Engine, Technikki will be waiting for you by the beach on Jellyfish Island.
Jellyfish Island Location Guide
Battle Zok Troopers to Collect Zokket Alloys
You’ll need to collect 3 Zokket Alloys. These can be obtained from defeating Zok Troopers on any of the Great Lighthouse Islands. Equip a Loot Booster Battle Plug to increase the drop rate for these materials.
List of All Great Lighthouse Islands
Return to Adaphne
Once you have 3 Zokket Alloys, return to Adaphne to complete the quest. You will receive the same reward regardless of which Engine you chose.
Dueling Geniuses Rewards
Defense Bean and Heart Bean
| Reward | Description |
|---|---|
 Heart Bean x1
|
Adds 1 to max HP. |
|
Defense Bean x1
|
Adds 1 to DEF. |
 Adaphnikki Boots x1
|
Boosts damage dealt in Jump-attack combos by 30%. JUMP +135 |
After completing Dueling Geniuses, Adaphne and Technikki will join forces and reward you with a pair fo Adaphnikki Boots. You will also be given a Defense Bean and Heart Bean as quest rewards.
Mario & Luigi: Brothership Related Guides
Lushgreen Sea Side Quests
Color-Full Sea Side Quests
Brrrning Sea Side Quests
Gulchrock Sea Side Quests
Stormstar Sea
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Dueling Geniuses Side Quest Walkthrough
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