By Jay / / Games

The Frog Invasion update in 99 Nights in the Forest brings new content, including a secret boss fight with the Frog King. To reach him, players need to collect special items called Frog Keys. These keys are the main requirement for unlocking the boss area. This guide will walk you through how to get Frog Keys, where to use them, and why they are important.

What Are Frog Keys?

Frog Keys are collectible items introduced in the Frog Invasion update. You need eight Frog Keys in total to unlock the door inside the Frog Cave, which leads to the Frog King boss fight. Without them, the door will remain locked and you won’t be able to access the final chest with rare loot.

How to Get Frog Keys

Frog Keys can be found across the map in specific locations:

  • Each key is hidden in different ponds throughout the forest.
  • To collect them, explore ponds carefully and interact with the glowing objects inside.
  • Keep in mind, enemies may spawn around some ponds, so it’s best to come prepared for fights.

Since there are eight ponds in total, you’ll need to visit every one to gather all the keys.

How to Enter the Frog Cave

Once you have collected some or all Frog Keys, the next step is entering the Frog Cave:

  1. Look for the giant whirlpool on the map.
  2. Jump into the whirlpool, and it will transport you inside the Frog Cave.
  3. The locked door to the Frog King’s chamber is found deeper inside this cave.

How to Use Frog Keys

Inside the Frog Cave, you’ll see a large locked door. This is where Frog Keys come into play:

  • Place your 8 Frog Keys into the door mechanism.
  • Once all are slotted, the door will open.
  • You’ll now be able to challenge the Frog King and access the reward chest after defeating him.

Why Collect Frog Keys?

Frog Keys are essential because they grant access to exclusive Frog King rewards, including:

  • Poison Spear (3% drop)
  • Poison Armor (1% drop)
  • Blowdart (1% drop)
  • Frog Boots (1% drop)

These items are some of the rarest and most powerful from the Frog Invasion update, making the Frog Keys a must-have for players aiming to complete their collection.


That’s everything you need to know about how to get and use Frog Keys in 99 Nights in the Forest. The process takes some exploring, but once you have all eight keys, you’ll unlock one of the biggest challenges in the update: the Frog King fight. The rewards are rare, so it’s well worth the grind.

99 Nights in the Forest
About Jay
A Content writer for Roonby.com Contact me on [email protected], we can't reply to gmail for some reason.