atomcraft itch: Demo Setup Guide, Mining & Chemistry Tips

The atomcraft itch demo is a science-focused sandbox adventure where the planet is built from simulated pixels, materials, gases, heat, and chemical reactions. The official Atomcraft itch.io page describes a project built around deeper mining, ore processing, artifact discovery, creature encounters, machine construction, and spaceship repair.

The opening takes place on planet Primora after a crash landing. Your immediate task is to collect materials from below the surface and gradually restore your ship. Progression is tool-based: stronger drills open harder terrain, while new upgrades let you process materials and construct more advanced systems.

Video Highlights:

• The opening tutorial introduces movement, hovering, inventory management, and the periodic table.
• Early progression covers fire-starting, copper smelting, iron production, and hammer construction.
• Oxygen, heat, carbon, and material placement all affect how a forge behaves.
• NPCs provide trade opportunities, repair tasks, farming knowledge, and crafting clues.

The official page also lists conveyor belts, trapdoors, heating and cooling elements, wiring, switches, sensors, and logic gates as part of the wider construction system. Advanced reactions may require carefully designed machines rather than simple furnace placement.

Your first hour should focus on unlocking basic access instead of collecting every unusual material. The starting tutorial points toward a fire starter, copper drill, hammer, forge designs, and basic survival equipment. This sequence creates the foundation for deeper exploration.

The compass is a practical early upgrade because it points toward your spaceship. Use the ship as a storage anchor rather than carrying every deposit during exploration. The demo includes an encumbrance limit, so excess dirt, common stone, and duplicate low-value materials should be deposited or discarded when space becomes tight.

Atomcraft’s most distinctive system is its material simulation. Ores are not simply recipes in a menu; they are placed into environments where heat, fuel, oxygen, gases, and physical layout influence the outcome. This makes a simple forge useful for basic metals but less reliable for reduction reactions.

A simple forge should separate fuel from the material being processed. A V-shaped layout can help keep the fuel burning below the ore while preserving a path for heated material. A runoff-style design can handle larger volumes, but it is more difficult to construct and tune.

When processing reducible ores, the general sequence is:

1. Heat the ore until it becomes an oxide or reaches the required reaction state.
2. Add carbon to remove oxygen from the heated material.
3. Capture or manage the resulting gases.
4. Collect the refined material separately from molten leftovers.

The game’s help system presents reaction concepts such as oxides, carbon, carbon monoxide, and carbon dioxide. It also explains that carbon reclamation can become important for later reduction processes. This means a hood or gas-handling design may be more valuable than simply adding more fuel.

Keep your first forge deliberately small. Build a working prototype, record which materials succeed, and only then increase its capacity. A large structure makes it harder to identify whether the problem comes from temperature, oxygen, material order, or blocked flow.

Mining is both exploration and logistics. Stronger drills expose deeper layers, but the value of a new deposit depends on whether you can transport, store, and process it. The periodic table and material guide help identify reactions, while the inventory and ship storage prevent resource overload.

Before leaving the ship, choose a specific target. Useful early objectives include:

• Finding hematite for iron.
• Locating coal or charcoal for hotter processing.
• Searching for clay near water.
• Looking for specialty elements needed by future upgrades.
• Mapping a route back to the ship.
• Carrying empty inventory space for unexpected discoveries.

The demo includes an artifact scanner, and the official page also highlights mysterious artifacts as an exploration feature. Do not treat every unusual material as immediately useful. Some deposits exist for later recipes, while others may become valuable only after additional tabs, machines, or reaction knowledge are unlocked.

Machine construction becomes more important after the hammer and forge-design tutorial. Future systems can include controllable conveyors, doors, switches, sensors, signal wiring, and logic gates. Build machines in modular sections so a single failed reaction does not require demolishing your entire base.

Atomcraft combines engineering with survival hazards. The most important danger in the early demo is not a powerful enemy; it is losing track of environmental conditions. High-altitude exploration can cause depressurization, while creatures, liquid materials, fire, and unstable reactions can create additional risks.

A helmet upgrade helps prevent suffocation when exploring above the normal atmosphere, but it must be toggled on correctly. Check the control prompt before ascending and return to a safe elevation if your protection is not active.

NPCs can expand your options. One character offers trade and ship-repair interactions, while another introduces farming and sells seeds. Farming can provide a repeatable source of food and materials, especially when wood, fiber, or plant-based resources become part of your production chain.

Creature encounters are part of the demo’s broader sandbox loop. Carry only the tools and materials you need when entering unfamiliar areas. If a trip is focused on mining, leave valuable spare equipment in storage and mark the route back with recognizable structures.

The strongest long-term objective is not simply collecting the rarest element. It is learning how to create a repeatable production system. Once you understand heat flow, oxygen access, carbon reduction, storage, and machine signals, you can scale from a hand-built forge to a more automated workshop.

Advanced materials can require multi-stage reactions. Nitroglycerin, for example, is described in the reaction guide as requiring glycerin and nitric acid. Because unstable reactions may explode, build test chambers away from your primary storage and keep the first batch small.

For current availability, demo details, development updates, and community links, use the official Atomcraft itch.io page. The page describes additional biomes, creatures, chemical reactions, and radioactivity as planned 2026-era development features, so specific systems may change as the project evolves.