Luigi's Mansion 3 13F Gems Complete Guide

Posted on 20 August 2026 | 60
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Luigi's Mansion 3 challenges players with clever environmental puzzles spread across the spooky floors of the Last Resort hotel. Floor 13, known as the Fitness Center, houses six hidden collectible gems that require unique combinations of Luigi's standard abilities and his spectral partner, Gooigi. Finding all of them is essential for completionists who want to fully clear this athletic-themed area.

Slamming the Gym Lobby and Training Room Gems

The first gem can be found right in the main elevator lobby by interacting with the front desk. You must use the Suction Shot on the nearby water cooler to reveal a hidden panel, then use Gooigi to sneak through a pipe to reach the collectible. This initial puzzle sets a clear standard for how hidden pathways work on this floor.

Moving into the Training Room, players will spot another jewel trapped inside a glass case in the corner. To break the glass and free the prize, you need to grab one of the heavy boxing gloves lying around the room and launch it directly at the display using the Poltergust. This straightforward physics interaction rewards players who take time to explore every object.

Navigating the Weight Room and Yoga Studio

The Weight Room contains a brilliant optical illusion that requires careful observation of the background mirrors. Luigi must step onto the balance scale in the corner of the room, which opens a hidden panel in the mirror wall that is otherwise invisible. While standing on the scale, send Gooigi over to use a Suction Shot on the revealed panel to claim the third gem.

In the Yoga Studio, players must solve a puzzle centered around floor mats to reveal a secret outdoor balcony. By interacting with the posters on the wall and rolling up the mats using the Poltergust, a hidden door will swing open. Walking out onto the ledge lets Luigi use his flashlight to grab the hidden collectible floating just out of reach.

Conquering the Pool Area and Locker Room Challenges

The final stretch of the Fitness Center takes players into the large swimming pool room and the adjacent shower areas. The fifth gem is hidden within the drainage system beneath the main pool area, which requires Gooigi to slip through a specific grate on the floor. Turning the nearby valve will clear away the pooling water, allowing your gelatinous clone to safely retrieve the item.

The last hidden collectible is located in the Locker Room and is tied directly to the athletic equipment scattered across the floor. Players need to locate a hidden radio on one of the benches and turn it on using the Strobe Light ability to trigger an encounter. Defeating the unique ghosts that emerge from the lockers will finally award you the sixth gem, completing your collection for Floor 13.