Medieval Engineers is a sandbox game about engineering, construction and the maintenance of architectural work and mechanical equipment using medieval technology. Players build cities, castles and fortifications; construct Mechanical Devices and Engines; and perform landscaping and underground Mining.
Medieval Engineers utilizes a realistic volumetric-based physics engine with a focus on structural integrity: all game objects can be assembled, disassembled, damaged or destroyed, and the object's mass and structure influences its integrity. The game comes with creative mode and an early prototype of survival mode. This is the second "engineering" game developed by Keen Software House. The first is Space Engineers, which sold over 1 million copies in its first year and is still a bestseller.