From a single mining ship to an interstellar industrial empire — your legacy begins in the void. Developer Tumbling Dumpling Studio and publisher Mythwright have announced that Main Sequence, the first-person space-sim factory builder, blasts into Steam Early Access on November 12, 2026.

Start Small, Grow Beyond Measure

You begin alone at the edge of charted space, aboard nothing grander than a humble mining vessel. Your mission: harvest resources, refine materials, and build — station by station, ship by ship — an industrial network that stretches across the stars.

• Mine & Refine — Scan asteroid belts, extract ore, and process materials directly on board your vessel
• Build & Automate — Construct sprawling space stations with conveyor belts, production lines, and fully automated supply routes between outposts
• Design & Deploy — Engineer every ship and station module by module — cargo bays, reactors, weapons, and aesthetics are entirely yours to shape
• Defend & Expand — Your industrial activity has awakened an ancient alien defence network. Protect your factories with custom-built fleets — or take the fight to them
• Research & Explore — Unlock new tech, venture into procedurally generated star systems, and uncover black holes, neutron stars, and lost civilisations

Solo or Side-by-Side — The Choice Is Yours

Main Sequence supports both single-player and online co-op, where each player commands their own ship. Divide roles — one managing logistics, another exploring, a third on defence — then combine your strengths to build something far bigger than any one empire could be.

What to Expect in Early Access

Detail	Info
Launch	November 12, 2026 (Steam Early Access)
Early Access Duration	1–2 years, with full release when content is complete
Playtime	~40+ hours of content at launch — deeper for automation fans
Modes	Single-player + online/LAN co-op
Demo	Free demo available now on Steam
Languages	English, French, German, Spanish, Japanese, Korean, Polish, Portuguese-Brazil, Russian, Simplified Chinese
Specs	Windows 10 64-bit, i5-8400, 8 GB RAM, GTX 1050 / RX 460, 5 GB space
Community	Discord + built-in feedback channels shaping development

The roadmap ahead includes new factions, expanded ship and station modules, additional production chains, and more mysteries to uncover — all guided by player feedback.

Wishlist Today — Secure Your Place in the Stars

The free demo is live right now — try before you blast — and the Steam page is open for wishlisting. Whether you dream of optimising perfect factory lines, designing the ultimate battleship, or exploring the unknown, Main Sequence is where your empire begins.

Head to the Main Sequence Steam page

Find out more here

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