All information about the trap Heavy Mortar in Mobile Strike including how it can be unlocked, what category, type and tier it is, how much resources are required and how long it takes to train.
An overview of all buildings and research necessary to unlock Heavy Mortar. These are the original requirements, not taking into consideration any research and building already done.
If you login and update your game profile you will in addition see the remaining requirements to unlock Heavy Mortar at the bottom of this page.