The Jungle Biome expansion in 99 Nights in the Forest continues with Part 2, adding new dangers and exploration mechanics to the biome. This update added the Jungle Fight Pits, additional mobs, and mysterious structures scattered throughout the biome. You can now encounter powerful enemies like the Cat entity and Mossy Mammoth while exploring Jungle Structures or attempting the arena-style Jungle Pits. So, here is a complete guide explaining how these new mechanics work, and everything you need to know about part 2.
How to Find & Clear Jungle Pits in 99 Nights in the Forest

Jungle Pits are special arena-style structures that appear in the Jungle Biome. They resemble a stone colosseum and are designed as combat challenges where players must defeat waves of enemies. When you first enter a Jungle Pit, you will notice a red button located inside the arena. Pressing this button begins the challenge and causes multiple Jungle Cultists to spawn in waves.
The objective is simple, you need to defeat all enemies that appear in the arena. The cultists will continue spawning until the wave event is fully cleared. Once the final wave is defeated, the Jungle Pit is considered completed. Clearing the waves successfully unlocks the reward chest located within the pit.
Jungle Pits Rewards
After defeating every wave of enemies inside the Jungle Pit, the arena rewards you with loot. The rewards usually include the items mentioned below:
- Jungle Chest
- Coin Stacks
- Jungle Biome-exclusive Loot (Poison Claws, Poison Armor, etc.)
These arenas function similarly to stronghold challenges, making them one of the best ways to earn resources and combat rewards in the Jungle Biome.
All Mobs in Jungle Biome & How to Counter Them

Several mobs now appear in the Jungle Biome, including new enemies introduced in Part 2. Here's a complete list of each of them, and how to counter them:
| Mob | Behavior | How to Counter |
|---|---|---|
| Mossy Mammoth (NEW) | Passive unless attacked | Avoid provoking it unless you are prepared for a tough fight |
| Cat Entity (NEW) | Spawns after Day 4 and actively hunts you and your teammates | Stay near the campfire or avoid the jungle at night |
| Boars | Aggressive, charges and attacks on sight | Dodge sideways and use ranged weapons |
| Frogs | Stationary, Attacks you with tongue and poisons | Attack from distance and avoid close range |
| Jungle Cultists | Melee and ranged attackers guarding temples and pits | Use cover and defeat them quickly before they surround you |
NOTE: The Cat entity is especially dangerous because it is immune to torchlight and can leap onto you quickly. If you encounter it in the jungle, it is safer to retreat toward your campfire.
How to Find Jungle Structures

Part 2 of the Jungle update also added several stone jungle structures scattered throughout the biome. These are smaller platforms built from stone that can appear across the jungle landscape. Unlike the larger temples or Jungle Pits, these structures are simple loot spots rather than combat arenas.
When exploring them, you can usually find useful items placed on the platforms. The loot found on these structures includes survival resources, weapons, or other helpful items that assist with your run. Because they are scattered randomly, it is worth exploring the biome carefully to locate them.
Frequently Asked Questions (FAQs)
The Cat begins appearing after Day 4 in the Jungle Biome.
You must press the red button inside the arena to begin the combat waves.
No. They are passive creatures that only attack if provoked.
Most Jungle Structures simply contain loot and do not spawn enemies, making them safe exploration points. But, they might be surrounded by mobs like Boars.
For more on 99 Nights in the Forest, check out How to Deal with the Bat in 99 Nights in the Forest or Complete 99 Nights in the Forest Bat Cave Guide on Pro Game Guides!