FortressCraft Evolved is described as 'The original FortressCraft was one of the best-selling Indie games of all time. A unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly Lines'. There are five games similar to FortressCraft Evolved for a variety of platforms, including Windows, Steam, Mac, Linux and Online / Web-based. The best alternative is Factorio. It's not free, so if you're looking for a free alternative, you could try Factory idle. Other FortressCraft Evolved like games are Dyson Sphere Program (Paid), Satisfactory (Paid) and The Quarry (Paid).