IRON NEST: Heavy Turret Simulator Guide

It is a first-person dieselpunk heavy-assault simulator about manually operating a giant turret. Set in an alternate late-1920s Spain on the brink of civil war, you receive orders and frontline reports through teleprinters, plan on a tactical map, and manually set the ballistic calculator, propellant charge, and elevation to fire the 5,000-ton main gun. It released on Steam on August 6, 2026, at a standard price of ¥1,980.

Yes, a Japanese interface is supported, with both the store page and in-game text localized. There are 16 supported languages. PC (Windows) is the only platform.

Its launch was exceptionally strong, reaching 4,473 user reviews and an Overwhelmingly Positive rating on August 9, 2026, three days after release, according to official Steam information. A two-person independent project dividing development and marketing roles, it ranked among Steam's popular new releases.

The official store description suggests three priorities. First, do not skim teleprinter information: both High Command's top-priority directives and frontline relays affect operations. Second, choose ammunition for its purpose: the 30 types have distinct roles, such as armor-piercing shells against bunkers and smoke covering friendly retreats. Third, propellant and elevation precision determine success: accurate inputs separate precise strikes from preventable disasters. The giant machinery takes time to move, so prepare the next step while waiting to become a skilled operator.

Its identity is an immersive simulator where you operate machinery piece by piece. Among games covered on this site, mech design and programming in Carnage Heart, mech action in Vital Shell, and assembling a real car in My Winter Car share the immersion of working on machinery.