Starminer — the hardcore space mining sim with Newtonian physics hits Early Access

Factorio meets Homeworld in deep space

Starminer is developed by CoolAndGoodGames, an independent studio that bet on building a space mining simulator on real physical foundations rather than simplified gameplay abstractions. The result is a game that demands you think about your ships' mass, their thrust capacity, their reactor heat dissipation — before even considering your asteroid drill efficiency. It hits Steam Early Access on May 27, 2026.

The Factorio comparison is inevitable and justified: like that game, Starminer is a systemic optimization game where every construction decision has cascading effects on the whole operation. The Homeworld comparison comes from the real-time strategic dimension: you deploy a modular fleet in space, and that fleet must serve both to extract resources and to repel the alien waves that your greed eventually attracts.

Newtonian physics as the core mechanic

What sets Starminer apart from most space simulators is its physics model. The game implements real Newtonian physics: your ships' mass determines the thrust energy needed to move them, and conservation of momentum applies to all maneuvers. In practice, a ship loaded with ore moves differently from an empty one. Accelerating costs fuel proportional to total mass. So does braking.

This simulation level has direct consequences on ship design. You don't simply build a ship with drills and send it to mine. You must calculate whether your engines' thrust is sufficient to move a ship of this size with this cargo, whether your fuel tank is large enough for the round trip, and whether the structure can withstand the physical stresses of full-load maneuvers.

Heat management is the other physical pillar of the game. Each module consumes energy and generates heat. Each reactor generates even more heat. In space, dissipating this heat requires dedicated radiators — and improperly sizing your cooling system risks overheating, module failure, or even reactor explosion. It's a continuous management mechanic that forces you to plan each ship's architecture before even building it.

Modular fleet and station construction

The fleet in Starminer isn't a monolithic object you move as a block. It's composed of distinct ships, each designed for a specific role: specialized miners, cargo haulers, warships, fixed extraction stations. Each ship is itself built module by module — drills, reactors, cargo bays, propulsion systems, weapons, heat radiators. Progression happens through a research tree that unlocks new modules, opening new configuration possibilities.

The game's economic dimension rests on balancing extracted resources against operating costs: fuel, maintenance, combat losses. The farther you venture from safe zones to find richer asteroids, the more aggressive the aliens become and the higher your potential losses. This is the classic tension/reward loop of games in this genre, but executed with systemic depth rarely seen in the category.

What's available in Early Access from day one

Unlike many Early Access launches that deliver skeletal content, Starminer arrives day one with four distinct modes. Campaign mode offers structured progression with objectives and gradual difficulty scaling. Survival mode places players in extreme conditions with limited resources and more aggressive alien waves. Sandbox mode offers total freedom to experiment without economic constraints. And a full tutorial guides new players through all the physics mechanics without skipping anything.

The studio plans about a year of Early Access, with primary goals being full multiplayer development and robust modding tools. The roadmap published on Steam also details adding new asteroid types, new alien factions with distinct behaviors, and commercial diplomacy mechanics with other mining empires.

Who's it for? Who should skip it?

Starminer clearly targets players who loved Factorio for its systemic depth, those who loved Homeworld for real-time space strategy, and those who find existing space simulators lack physical rigor. If you want an accessible experience with no steep learning curve, Starminer isn't the right choice — the game demands genuine intellectual investment to understand its mechanics before the enjoyment kicks in.

On the other hand, if you're the kind of player who spends hours optimizing a Factorio factory, calculating production ratios, or debugging a logistics chain, Starminer offers exactly that kind of satisfaction — but in three-dimensional space with additional physical constraints. That's a rare value proposition in the genre.

Verdict — a solid Early Access for hardcore sim fans

Starminer is the type of game that doesn't make noise at launch but builds a dedicated community over time. The Newtonian physics, heat management, and modular system depth provide solid foundations for a year of Early Access. The question is whether CoolAndGoodGames will deliver on multiplayer and modding tools — two features that, once delivered, could transform Starminer from a good niche game into a reference title for the sim-space community.

On Steam, the pre-launch demo received positive feedback from players who specifically appreciated the physical complexity that others might find off-putting. That's a healthy signal: the game found its target audience before even officially launching.