The Hunter Potion shows the location of enemies, NPCs and creatures on your screen by highlighting them and making them glow with a red or green tint, to show whether they are aggressive or not.
Green = Neutral Red = Aggressive
The Hunter Potion is particularly useful when fighting Burrowing Monsters, especially the Eater of Worlds and Destroyer. It may also be useful while exploring the Underground Jungle since the Man Eaters can go through blocks and attack before they can be seen.
These can be quite difficult to manually craft, hence the fact that one needs a Shark Fin for each one. However, they are uncommon loot from Pots and Chests, which eliminates the process of crafting.

On left: Neutral NPC Snail, on right: Aggressive NPC Hornet, Man Eater, Jungle Creeper.
Update Info[]
- New Sprite.
- Changed NPCs to be shown in green or red light, and will no longer emit light to surrounding areas.
- Added to the game.