Donkey Kong Bananza: All Banandium Gem Locations in Lagoon Layer SL102

Hunting for Banandium Gems in SL102 of Donkey Kong Bananza? Here’s a full guide to all 5 gem locations (no postgame spoilers), including tips for completing Pop Party Challenge Course 3.

Welcome to SL102: Chimpy Chaos & Pop Party Mayhem

If you’ve made it to Sublayer 102 of the Lagoon Layer in Donkey Kong Bananza, congrats — you’ve officially hit the part of the game where secrets start hiding behind every wall and even the ceilings are out to test you.

This guide covers every Banandium Gem (Banana) in SL102 that you can find before postgame, helping you snag those extra Skill Points to upgrade your Kong form and keep VoidCo shaking in their boots.

Let’s swing into it.

All Banandium Gem Locations in Lagoon Layer SL102

Banandium Gem #51 – Dipped Into Chimpy Channel!

• Location: Right at the start of SL102.
  
• How to Get It: You’ll unlock Kong Bananza transformation here. Immediately after, destroy the path ahead and you’ll uncover a bundle of three Banandium Gems.
  
• Tip: Don’t miss this – it’s basically the game saying, “Congrats, now go nuts.”
  

Banandium Gem #52 – Pop and Destroy

• Location: Inside Pop Party Challenge Course 3.
  
• How to Get It:
  
  • Your goal here is to destroy 5 balloons.
    
  • Four are obvious. The fifth? Not so much.
    
  • Look for a rotating platform, then ground slam (press B) to break through and reveal a hidden underground room.
    
  • Pop the final balloon to unlock Gem #52.
    

Hidden balloon = hidden gem. Trust your instincts (and smash everything in sight).

Banandium Gem #53 – Atop the Concrete Roof

• Location: Also in Pop Party Challenge Course 3.
  
• How to Get It:
  
  • Smash through the walls that lead outside the challenge room.
    
  • Use the nearby concrete walls to climb to the roof.
    
  • The gem is just chillin’ up there, waiting to be grabbed.
    

Platforming tip: Kong Form helps here if you need a boost or better grip.

Banandium Gem #54 – Hung from the Ceiling

• Location: Inside Pop Party Challenge Course 3 (again!).
  
• How to Get It:
  
  • While searching for balloons, look up.
    
  • This gem is literally hanging from the ceiling, often outside your default camera view.
    
  • Use a metal platform below to boost yourself up and grab it.
    

Missable alert! This one’s a classic case of “oh dang, I never looked up.”

Banandium Gem #55 – Shipwrecked Treasure

• Location: Just after finishing Pop Party Challenge Course 3.
  
• How to Get It:
  
  • Head in the opposite direction from the course’s exit.
    
  • Smash through a nearby wall to uncover a wrecked ship area.
    
  • The gem is tucked near the far end, close to an opening you can drop into.
    

‍☠️ This one gives strong pirate vibes. Look for driftwood and broken planks.

Quick Gem Checklist for SL102

Pro Tips for Banandium Hunters

• Always backtrack after challenges — secret areas love to hide behind you.
  
• If a wall looks slightly different… it’s probably smashable.
  
• ️ Look up, down, behind, and through things. Nothing’s off-limits.
  
• Kong Bananza transformation makes climbing and platforming easier for a lot of these spots.
  

SL102 Is Banana Gold

This part of Donkey Kong Bananza really ramps up the level design — and rewards the curious. Whether you’re in it for completion or just need that extra Skill Point juice, these five gems in SL102 are worth tracking down.

Now go forth, pop balloons, smash ceilings, and uncover every last banana this sublayer’s hiding.

Also check:

Donkey Kong Bananza: Hilltop Hide and Seek

The Salvager’s Stash: How to Grab the Hidden Banana Below the Shop in DK Bananza

How to Find the Hidden Banana in Nostalgia Country – Donkey Kong Bananza Guide