Zenny (ゼニー Zenī), oftentimes abbreviated as Ƶ, is the form of currency used throughout the world of the Breath of Fire series, as well as numerous other media franchises created by Capcom. It is referred to simply as "gold" in the original game and as coins in Breath of Fire II.
Zenny can be acquired by defeating most types of enemies (although some enemies, such as robots, might not drop zenny), selling items, or finding it in chests/loot bags during gameplay. Zenny appears to parallel Japanese yen, as most items, with the exception of very small items, such as herbs and bait, often cost in the hundreds or more.