In Lords Mobile Wall Defense I research increases your walls defense stats. It is found in the upgrade defenses tree.
There are 10 levels and once maxed your wall defense will have increased by 150%. You need to have researched trap retrieval I before you can unlock this ability.
The table below has the resource cost and time to upgrade each level. It also shows the might and rewards granted. You can find out your own research time by using our research calculator.
Wall Defense I Research Requirements
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