- To do: everything about EBF5.
General locations of the keys in EBF4. (From official walkthrough)
Keys are a group of Key Items found in Epic Battle Fantasy 4 and 5. They are used to unlock boxes that are blocking certain treasures. There are multiple types of boxes, however, each requiring a specific type of Key.
There are twenty Keys and associated blocks in the game; five of each type. They may be inspired by the Old Key from Epic Battle Fantasy 3.
Types of Keys
Epic Battle Fantasy 4
Keys in EBF4 are found scattered across the map, and open various blocks also scattered across the map. These blocks sometimes grant access to a chest, make a shortcut available to the player, or sometimes even open up a new section of the map.
Copper Key
The first type of key found in the game. It is made of copper and possessing a somewhat archaic-looking design. It is used to remove Copper Blocks.
Copper Keys are scattered all over the map, but mainly appear in early areas of the game, such as Greenwood Village, Ashwood Forest, and the Crystal Caverns.
Steel Key
A more conventional-looking key, resembling a thicker, angular, and more silver version of the Old Key. It opens Steel Blocks.
Steel Keys mainly appear in the eastern side of the map, especially in or around the Waste Disposal Plant.
Gold Key
Somewhat resembling the Steel Key's teeth, the Gold Key made of gold and with an ornate head decorated with various gems. It removes Gold Blocks, which can be identified by their golden colour and the red markings around the keyhole.
Gold Keys are scattered throughout the northern half of the map. The first one can be found in Lankyroot Jungle, but the majority are found in or around the Temple of Godcat.
Coral Key
A pale pink key resembling a spiky "G" with a teardrop-shaped handle adorned with a blue gem. It opens Coral Blocks, which appear to be sandy brown blocks with red coral branches on one corner.
Coral Keys are almost exclusively found in or around Goldenbrick Resort. They are the last type of key introduced to the player.
Epic Battle Fantasy 5
Keys return in EBF5 with a different purpose. While they are still used for unlocking blocks, all blocks are now grouped into a single area (such as the Grand Gallery or inside the Tree). As such, multiple keys can be "redeemed" for treasure at once, and their use in aiding with navigation is no longer applicable.
Copper Keys
Used in Anna's House in Greenwood Village.
Topaz Keys
Used in Redpine Town.
Coral Keys
Used at the Rainbow River's eastern end.
Diamond Keys
Used in the Forgotten Temple.
Gold Keys
Used at the Grand Gallery.
Wooden Keys
Used inside the Tree in the Mystic Woods.