Blast Door

Blast Door is a type of wall block in Mindustry that is part of the Erekir-exclusive set of defensive structures. It is categorized among Erekir Walls and general Walls, and appears only as content tied to the Erekir environment rather than as a standard core-game wall available across all maps.

Blast Door shares a unique design constraint with two other Erekir wall blocks: Shielded Wall and Thruster. Unlike most wall types that provide both multi-tile variants and a 1×1 single-tile counterpart for fine-grained placement, Blast Door does not have a 1×1 version. This distinguishes its placement and layout options from many other defensive blocks and encourages use in larger, structural arrangements rather than as individual tiles for tight micro-building.

Because Blast Door is grouped with Erekir-exclusive content, it functions as part of that themed defensive toolkit and should be considered when planning base layouts on Erekir maps or when using mods/maps that include Erekir content. The absence of a 1×1 counterpart means players must design around the available footprint sizes when integrating Blast Door into walls, chokepoints, or layered defenses. Use it alongside other Erekir walls to maintain consistent coverage and to take advantage of the design language and placement rules specific to that content set.

• Does not have a 1×1 tile variant; must be placed in its available multi-tile forms.
• Classified within Erekir Walls and Walls; available only as Erekir-exclusive content.
• Shares the "no 1×1 counterpart" trait with Shielded Wall and Thruster, making its placement style and planning comparable to those blocks.