NeoAeris is a survival-focused mod centered around atmosphere management and sealed habitats. Build airtight structures, create safe living spaces, and protect yourself from the dangers of vacuum exposure in dimensions where the atmosphere cannot sustain life.

We all wanted to build a truly massive base on the moon, right? I sure did, but unfortunately, the 1.21.1 mods available either don’t let you create something like that without going through a lot of hassle, or they simply have built-in limitations due to logic that puts a significant load on the system when dealing with large areas.

The mod introduces a room-based atmosphere system that allows enclosed spaces to become pressurized and habitable. Structural integrity matters - breaches, leaks, and damaged hulls can compromise an otherwise safe habitat and expose its occupants to hostile conditions.

Current Content

The current version of NeoAeris provides the core required to create and maintain habitable environments:

Air Shell / Air Glass — airtight blocks used to build sealed rooms.
Air Anchor — detects, validates, and manages sealed rooms.
Air Distributor — supplies breathable atmosphere to sealed rooms. Provide FE and Water supply to one of it's sides to work.
Airlock Door — airtight sliding doors for controlled access between environments (currently available as a 3×3 variant).

Together, these components form the foundation of NeoAeris' atmosphere and habitat systems.

Make It Work The Way You Want

NeoAeris is designed to be highly configurable. Nearly every major mechanic can be adjusted through the server configuration, including atmosphere loss rates, suffocation damage, room limits, resource consumption, unsafe dimensions, vacuum-immune entities, and supported vacuum-proof armor sets.

What Makes NeoAeris Different?

Unlike many atmosphere or space mods, NeoAeris focuses on rooms rather than individual blocks of oxygen. Once a habitat is properly sealed and validated, the entire interior becomes a pressurized living space instead of requiring oxygen distribution to every block.

This approach allows extra large bases — >100k blocks to be managed efficiently while still making structural integrity matter. Hull breaches, leaks, and damaged rooms have real consequences, but maintaining a habitable environment remains straightforward and scalable.