Indoor Astronaut Gmbh

What Indoor Astronaut Gmbh does

Indoor Astronaut GmbH is a Swiss indie game studio headquartered at Fliederstrasse 22 in Zürich, founded in 2018 by students from ETH Zurich's Game Programming Lab. The studio's product franchise is the Unrailed! series — a cooperative train-track-building game where 1–4 players race to keep a moving train from derailing by gathering resources and laying track across procedurally generated biomes — and its sequel, Unrailed 2: Back on Track. The studio serves casual and social gamers seeking accessible cooperative play and enthusiast/competitive gamers drawn to leaderboards, time attack, and 4v4 competitive modes.

The studio builds on the open-source Godot engine, which it officially sponsors via the Godot Foundation, and operates a self-publishing model with cross-platform multiplayer across Steam, Epic Games Store, Nintendo Switch, Switch 2, PlayStation 4/5, Xbox One, macOS, and Linux. Core engineering capabilities include procedurally generated worlds with multiple biomes, a cross-platform multiplayer networking layer, and a performance optimization engine tuned for low-end hardware (Unrailed #6 Performance Update). The product portfolio extends beyond the base game through periodic major updates, the Terrain Conductor community map editor, weekly challenges, and cross-IP character collaborations with Among Us (InnerSloth), Cat Quest III (Awaceb), and Tchia (The Gentlebros).

Revenue is generated primarily through one-time-purchase game sales on global digital storefronts, supplemented by cosmetic microtransactions via an in-game Fashion Express store, Supporter Packs/Bundles, and separate soundtrack sales. The company is privately held and bootstrapped with no disclosed external funding or parent entity, self-publishing in Western markets while leveraging Daedalic Entertainment (Western distributor) and bilibili (China distributor) partnerships for international reach. The company's customer base is fully consumer/B2C across more than five geographic regions (Europe, North America, East Asia, Asia Pacific, DACH).

Name

Indoor Astronaut Gmbh

Legal name

Indoor Astronaut GmbH

Website

https://indoorastronaut.ch

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

Indoor Astronaut GmbH is a Zürich-based Swiss indie game studio (founded 2018) that develops and self-publishes the cooperative multiplayer Unrailed! franchise across PC, console, and handheld platforms for casual and competitive gamers worldwide.

Ownership category

akta.pro rank

Headquarters

HQ city

Zurich

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Video Game Sales: One-time purchase model for video games sold through digital distribution platforms. Unrailed! and Unrailed 2 are sold as standalone purchases with no recurring subscription required.
2. Downloadable Content and Microtransactions: Additional cosmetic items, character skins, and expansion packs sold through the in-game Fashion Express store and supporter packs.
3. Soundtrack Sales: Original soundtracks sold separately as digital purchases.

Go-to-market motion2 records

Distribution channels5 records

Marketing channels4 records

Core offering

Indoor Astronaut GmbH is an independent Swiss indie game studio that develops and self-publishes cooperative multiplayer video games, centered on the Unrailed! franchise. Its core selling activity is one-time-purchase digital game sales (Unrailed! and Unrailed 2: Back on Track) across PC and console storefronts, supplemented by cosmetic DLC, character collaborations, and original soundtrack sales.

Product overview

Indoor Astronaut GmbH is a Swiss game development studio that creates cooperative multiplayer games, primarily the Unrailed! series. The core product line includes Unrailed! (original cooperative track-building game) and Unrailed 2: Back on Track (full sequel with overhauled mechanics and visual updates). Unrailed 2 features multiple game modes including Endless (procedural survival), VS Mode (4v4 competitive), Time Attack (20-minute challenge), and Terrain Conductor Mode (custom map editor). The games support cross-platform multiplayer across PC (Steam, Epic), PlayStation, Nintendo Switch, Xbox, Linux, and macOS. Character collaborations with Cat Quest, Tchia, Among Us, and others expand the roster. The company sponsors the Godot Foundation as the game is built using the Godot engine.

Differentiator

Problem solved

Functional benefit

Brands

• Unrailed!: The original cooperative train-building game released in 2020.
• Unrailed 2: Back on Track

Products and services

• Unrailed! Cooperative multiplayer train track-building game where 1-4 players work together to gather resources and construct train tracks across procedurally generated worlds, keeping the train moving to avoid derailment. Sold as a one-time purchase via Steam, Epic, PlayStation, Nintendo Switch, and Xbox.
• Unrailed 2: Back on Track Full sequel to Unrailed! featuring overhauled mechanics, a major visual update, new game modes (Endless, VS Mode 4v4, Time Attack, Terrain Conductor map editor), bosses, and custom map creation. Sold as a one-time purchase on PC (Steam) and console platforms.

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Feature3 records

Partnerships

Seven partnerships are on record, tiered minor and core.

• AwacebminorStrategic or Co-development Partner · 1 March 2025Collaboration partnership bringing Cat Quest III character 'Seeker' as a playable collab character into Unrailed 2.
• The GentlebrosminorStrategic or Co-development Partner · 1 March 2025Collaboration partnership bringing Tchia character as a playable collab character into Unrailed 2.
• Godot FoundationminorStrategic or Co-development Partner · 1 June 2024Official sponsor of the Godot Foundation. Indoor Astronaut switched to Godot engine for Unrailed 2 development and supports the open-source game engine community financially.
• Daedalic EntertainmentcoreChannel Partner/ Reseller/ Distributor · 1 August 2019Publisher partnership for Western markets. Daedalic Entertainment handled publishing and distribution for Unrailed! in international markets, including presence at major gaming conventions and press coverage.
• bilibilicoreChannel Partner/ Reseller/ Distributor · 1 August 2019Chinese co-publisher partnership. bilibili serves as the official publisher and distributor for Unrailed! in China, including localized versions, ChinaJoy exhibition presence, and promotional activities through the bilibili platform.
• Pro HelvetiaminorGTM or Marketing Partner · 1 March 2019Swiss arts council providing support for international exhibition at GDC 2019 and other industry events as part of SwissGames delegation.
• Microsoft ID@XboxminorGTM or Marketing Partner · 1 March 2019Microsoft's independent developer program supporting indie game development and Xbox platform publishing.

Scale indicators1 record

Recent moves6 records

Expansion highlights6 records

Emerging players

• InnerSloth: Developer of Among Us, whose Crewmate character appears as a crossover in Unrailed 2; comparable indie-studio trajectory from a single hit to a multi-title, multi-platform franchise.
• Studio MDHR: Developer of Cuphead, an indie cooperative title with cross-platform multiplayer and a distinctive art style; comparable in being a small studio with a beloved cross-platform multiplayer franchise on Switch, PlayStation, Xbox and PC.
• Awaceb: Developer of Tchia and a collaboration partner (Tchia character in Unrailed 2); a similarly sized indie studio with comparable cross-platform ambitions and family-friendly art direction.
• The Gentlebros: Developer of the Cat Quest series and an active collaboration partner with Indoor Astronaut (Cat Quest III 'Seeker' is a playable character in Unrailed 2); closely comparable indie studio profile, scope and audience.

Direct peers

• Ghost Ship Games: Developer of Deep Rock Galactic, a cooperative multiplayer game with procedural generation and broad cross-platform support — directly comparable to Unrailed in target audience and live-ops content cadence.
• Team17: Long-running indie publisher/developer behind Overcooked! — the most direct competitive analogue to Unrailed's cooperative, session-based, family-friendly multiplayer design — making it the closest comparable in product category and target audience.
• Monomi Park: Developer of Slime Rancher, a similarly charming, family-friendly indie title with cooperative-friendly gameplay and a sequel in active development — directly comparable audience and lifecycle stage.
• Hazelight Studios: Developer of It Takes Two and Split Fiction; both are critically acclaimed cooperative-only multiplayer titles that, like Unrailed, sell primarily on the strength of their co-op mechanics and cross-platform play.
• Endnight Games: Developer of Sons of the Forest / The Forest, an indie studio with survival-crafting multiplayer on PC and consoles; comparable in operating model (small team, multi-platform indie hit) and audience overlap with Unrailed's casual-coop segment.
• Ghost Town Games: Developer of PlateUp!, a cooperative multiplayer cooking/restaurant-management game competing head-to-head with Unrailed for cooperative multiplayer mindshare on Steam and consoles.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/IndoorAstronaut
• Facebookfacebook.com/unrailed
• Instagraminstagram.com/playunrailed
• TikToktiktok.com/@unrailed
• LinkedInlinkedin.com/company/indoorastronaut

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Indoor Astronaut Gmbh