Tech Center

The Tech Center determines the maximum level to which you can merge your troops and training buildings.

Each upgrade costs gold and a relevant Merge/Construction Lv. token (ie. to upgrade the level to which you can merge Barracks, you need "Barracks Merge Lvl increase" tokens). The cost goes up with each level and is tied to your account level. Train Faster, Infinite Firepower, March Limit, Repair Workshop and Extra Deployment Slot require General R&D Items to upgrade.