Overgrown Cavern
The Overgrown Cavern is a biome under the Desert east of the Pyramid. It is a massive, fungus-infested area full of deadly enemies.
Along with great danger, Chests, Item Pedestals and high-tier Wands are very common here. Due to this, the Overgrown Cavern is also referred to as Wandmart in community discussions.
A smaller pocket of this biome can also be found between the Power Plant and the Wizards' Den.
On the far eastern end of the larger biome, a ??? room can be found.
Layout and Hazards
The Overgrown Cavern is mostly made up of chunks of Fungal Soil, with piles of Weird Fungus and Blue Sand being plentiful. Occasionally, one can find pools of Water and small caves of Toxic Rock containing either Chests, items, or wands, similar to the ones found in the Fungal Caverns. Giant explosive fungi are also abundant here, along with an unique green-colored variant that splashes Acid in addition to exploding. As Fungal Soil is immune to corrosion, Acid pools become increasingly common while traversing the zone.
A few areas constantly spawn one of two possible traps within them. One are small, volatile green mushrooms that spawn in bunches and when triggered, they cause a small explosion and spawn a few Myrkkynääpikkä, who can also trigger other nearby shrooms when exploding. The other variant are constant Prickly Spore Pods, detonating in small puffs of fire and a handful of spikes that damage everything around them.
As most of the enemies and vegetation in this biome are fungal and/or explode when triggered, they are naturally highly flammable and vulnerable to 
Fire damage. While this could be useful, this can cause an uncontrollable chain reaction of fires, explosions, and broken Potions that might contain hazardous liquids, sometimes without any player intervention at all.
Enemies and Hazards
The Overgrown Cavern shares a few enemies with the Fungal Caverns, along with a few exclusive fungus enemies. All of the latter explode violently on death, destroying terrain, setting it ablaze and dealing high damage to anything within the blast. Without immunities, extreme caution is advised.
Exploration Tips
- Explosion Immunity or other perks that give similar effects can invalidate nearly all fungal enemies, except for the Huhtasieni's projectiles.
- Fire Immunity is also advised, as the explosions can also cause fires.
- Proactive destruction of the bright blue and green fungus can both make exploration safe and allow you to get extra gold from trick kills.
- Going near these mushrooms is ill advised and in some cases instantly run-ending.
- Any mushrooms that grow in real time on screen are not worth the effort to fully clear out. For the blue ones it is impossible; for the small green ones with disc-shaped caps, it is possible but they very rapidly respawn. It is worth destroying small green ones to temporarily clear a path, as some are contact explosives once they detach from the ground (which can happen when you are walking over them, killing you).
- As Weird Fungus tends to pile up in this biome, you will often be under the Slimy effect. A Teleport Bolt wand or some other way of movement is recommended to mitigate the speed reduction. Alternatively, any source of fire can remove the Fungus.
- Terrain destruction will spread Acid over the biome, which will not go away without either waiting for it to become Flammable Gas onscreen (offscreen materials are less likely to have alchemical reactions happen as a function of how far offscreen they are; and if they are offscreen to any degree they are deprioritised) or performing alchemy to remove it otherwise. Be careful of where you land, as it could easily eat away large chunks of health. Also be wary of liquids less dense than Acid. They may end up on top of a pool, making it permanent.
- Kiukkumöykky and the Möykky they spawn should either be dealt with quickly or avoided, as the could knock you down into pools of Acid or crowds of enemies.
- They also tend to overload the spawning pool such that an area will appear to be cleared of threats, only for there to be dozens of Möykky present in the queue such that when you come back, the area is flooded. This can repeat for several cycles, so if you come across an area with a flood of this enemy, it is wise to either avoid it, or, if you are capable, cycle through it in a loop at least once to confirm that this spawning queue issues been dealt with and that the area is permanently as safe as any area of this biome can be.
- Keeping a single empty inventory slot allows you to pick up a potion (by using the key bound to the pick up item action) thrown by Puistokemisti that might have otherwise scored a hit while simultaneously fleeing. Given that some of their potions are effectively instant death below certain health thresholds, this can be very useful. They can be exploited further - both liquids and Weird Fungus slow potions they throw to under the breaking threshold so long as there is a sufficient quantity of the material (spraying from a potion is not sufficient).
Void Liquid Exploit
It is possible to destroy the entire biome with Void Liquid because the ground is mostly made up of Fungal Soil. Using a drop of Toxic Sludge and Worm Blood can create void liquid, flooding from the top to the bottom of the overgrown cavern.
Most non-flying enemies, items, and props will either be destroyed or fall down, while wands will remain in the place they were. It is highly recommended to have a Teleport Bolt or other sort of movement wand when doing this.
Soundtrack
Music that plays here includes:
Track 14 of Noita Official Soundtrack vol. 1 is titled "Audition of The Fungi King".[1]
Track 18 of Noita Official Soundtrack vol. 1 is titled "Taste of Fabulous Tentacles".[2]
Notes
History
- Apr 8 2024: Added Viha-Aave and Utu-Aave enemies.