What are Materials and how do I use them?

Materials can be used to upgrade Towers and Heroes. Upgrading these improves their performance in combat and unlocks new abilities.

Materials can be discovered in the following ways:

  • As a reward from completing Missions
  • Collected when dropped randomly from defeated Creeps.
  • Completed missions can be revisited to collect more Materials
  • Gold can be spent to salvage further rewards from that completed mission.

You can tap on a particular Material in the inventory to discover the best missions to find it.

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