7 Millimeters is an engaging simulation game that combines carpentry with survival elements. Players take on the role of a skilled carpenter who dreams of building his own workshop in a new neighborhood. The game features a detailed measurement and wood cutting system, requiring players to accurately meet customer specifications while managing their resources effectively. The realistic economy system allows players to maximize profits by reusing previously cut wood for new projects. With a day/night cycle and player hunger system, the game immerses players in a lively environment where they must balance work and survival.

As business flourishes, players face challenges from a local gang demanding protection fees, turning the workshop into a battleground. Players must invest earnings in weapons and defenses to fend off gang attacks while continuing to serve customers. The game features two neighborhoods for exploration, where players can gather supplies and complete quests. 7 Millimeters cleverly blends crafting with combat, offering a unique gameplay experience that tests both creativity and strategic planning.