The Thinker's Box is one of the many monster drops that can be acquired in the Frontier. It can be acquired through many sources and means, including but not limited to:
- A possible gift from the Otherworld Present.
- A possible reward while exchanging fireflies with Stick during the Firefly Quest.
- A possible reward from a regular Treasure Chest.
- A possible reward from a Grand Treasure Chest.
- Killing Forest Guardians.
- Killing Gumbos.
- Killing Otherworldly Dollhunters.
- Killing Otherworldly Knights.
- Killing the Parasite.
- Killing Ratdogs.
- Killing Two-Eyed Monstrosities.
- Killing Whappers.
- Purchasing it from Linkman the Junkman at a price of 175,000 gold.
The Thinker's Box is an item from a land of riddles and corruption. Nobody knows when and how it ended up in the Frontier. It may be just a simple box with no use or a box that nobody knows how to open and unleash the power inside. Its only apparent purpose is to be sold to a selling vendor.
- It may be a reference to the Pandora's Box.