Gold is the currency in Palm Heroes and is required to build structures and purchase troops and Heroes. It is the most limited resource and managing Gold is a skill that in
which a successful adventurer must become proficient.
Wood is one of the two most basic resources and is used in nearly all structures. All castles contain Saw Mills, which produce one unit of wood per turn. Additionally, nearly all castles have a dedicated, external Saw Mill located nearby which produces two units of wood per turn.
Ore is the other most basic resource and is similar to wood in that each castle contains an Ore Mine and most castles have a dedicated, external Ore Mine nearby.
Advanced resources include Crystals, Gems, Mercury, and Sulfur. Some structures require several of these resources (e.g., Mage Guild Levels 2 and higher), but typically less than 10 units. The following is description of each of the advanced resources and instances where quantities of 10 or more are necessary.
Crystals are generated in Crystal Mines found in Knight and Barbarian Castles and as external structures in some maps. Crystals are required to build Cathedrals (20) and
Cyclops Caves (20) and an additional crystal is required to recruit each Paladin and
Cyclopes from those respective buildings.
Gems are generated in Gems Mines found in Wizard Castles and as external structures in some maps. Gems are required to build Unicorn Glades (10),
Labyrinths (10), and Cloud Castles (30). Two additional gems are required to recruit
each Titan from Cloud Castles.
Mercury is generated from Alchemist’s Labs found in Sorceress and Necromancer Castles and as external structures in some maps. Mercury is required to build Stonehenges (5), Red
Towers (20) and Laboratories (20) and an additional bottle of mercury is required to
recruit each Phoenix and Bone Dragon from those respective buildings.
Sulfur is generated from Sulfur Mines found in Warlock Castles and as external structures in some maps. Sulfur is required to build Hydra Ponds (10) and Dragon
Caves (30). Two additional sulfur units are required to recruit each Black Dragon.
A campfire contains a small amount or resources and some gold.
You can occasionaly encounter blue mana crystals. They restore your hero's mana points.
Spell scrolls contain spells to cast. It is noticeable that if a scroll contains a high level spell, your hero can use it even if (s)he doesn't have wisdom skill.