Currency

Currency is a feature introduced in version 0.6 (currently a dev build) and allows you to trade with NPC villagers with coins.

Coins

Monsters will randomly drop coins upon death. You can also find coins in chests. There are 3 tiers of coin:; bronze, silver, gold and platinum. These can be used to trade with villagers. Coins will currently upgrade themselves, as follows (please add to) 100 Bronze coins => 1 silver coin.

    As of The dev build 0.6.0 NPC functionality has arrived! Villagers will spawn randomly in an NPC Village and have a chance of spawning with any of the 6 normal vanilla textures. If they happen to spawn as anything other than the default "citizen" type then they will be able to be traded with. As of now the type of villager does not affect what items are sold. When NPC's are spawned they have a first and last name, as well as a level. The level that they are directly affects how good the items are that they sell. But when you sell an item it is forever stuck in their inventory. It is unconfirmed if this will be changed in the following updates.