Survivor.io Thunderbolt Mine & Inferno Mine

The new Skill - Modular Mine - has arrived in Survivor IO and heres how it works. You first need to get your Modular Mine to 5-Star and then also have either the Molotov or Thunderbolt as well. Once one of those is at 5-Star plus the Thunderbolt OR the Molotov is at 5 Star as well, you will be able to evolve the Modular Mine.