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Main Sequence

Publisher Mythwright and developer Tumbling Dumpling Studio have set Main Sequence for early access on November 12 (November 13 in Japan), planned for PC via Steam with an Epic Games Store version planned but undated. It follows a demo that supports Japanese, runs on Steam, and covers single-player and online co-op.

Synthesized from 2 Yomimono stories · updated Oct 8

Main Sequence is an upcoming space automation sim from developer Tumbling Dumpling Studio and publisher Mythwright. The game starts with one mining ship and grows into a galaxy-scale production network. It blends automation, spaceship design, and combat, and divides its play between single-player and online co-op, with co-op planned.

The first public step was a demo. It supports Japanese and runs on Steam. The demo has registered a Very Positive rating on Steam and drawn more than 100,000 wishlist registrations.

The next step is early access. Mythwright said on October 2 that the release is set for November 12, which is November 13 in Japan. It is planned for PC via Steam, and an Epic Games Store version is planned but undated. Both dates in the announcement refer to the early access launch.

Key facts

Developer
Tumbling Dumpling Studio ↗
Publisher
Mythwright ↗
Early access release date
November 12, which is November 13 in Japan ↗
Planned platforms
PC via Steam, with an Epic Games Store version planned but undated ↗
Demo support
Japanese, available on Steam ↗
Demo reception
Very Positive rating on Steam and more than 100,000 wishlist registrations ↗
Premise
Space automation sim that starts with one mining ship and grows into a galaxy-scale production network ↗
Modes
Single-player and online co-op, with co-op planned ↗

Timeline

Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.

Facts

Release
game · November 12, 2026 · global · 2026-10-05
Release
game · November 13, 2026 · Japan · 2026-10-05
Release
game · 2026-05-29 · global · 2026-05-29
Announced
demo has drawn a Very Positive Steam rating · 2026-10-05
Announced
more than 100,000 wishlist registrations · 2026-10-05
Announced
early access planned for 2026 · 2026-05-29

Connections

Produces of
mythwright

Structured graph also available as JSON at /public/entities/main-sequence. CC BY 4.0.

Claim activity

When a claim about Main Sequence was confirmed, debunked, or disputed against open-web sources. The record stays even after a claim drops off the facts list.

  • Confirmed early access planned for 2026 May 30 · source

All coverage

Oct 5

Main Sequence Sets Early Access Launch For November

Publisher Mythwright said on October 2 that Main Sequence, developed by Tumbling Dumpling Studio, will enter early access on November 12, which is November 13 in Japan. It is planned for PC via Steam, with an Epic Games Store version planned but undated. The space automation sim starts with one mining ship and grows into a galaxy-scale production network, with online co-op planned.

May 29

Main Sequence Demo Launches With Japanese Support, Early Access Set for 2026

Publisher Mythwright and developer Tumbling Dumpling Studio released a demo for the space factory automation game Main Sequence. The demo supports Japanese and is available on Steam. The single-player and co-op multiplayer title, which blends automation, spaceship design, and combat, is planned for early access within 2026.