What Keen Software House does

Keen Software House is an independent game development studio headquartered in Prague, Czech Republic, founded by Marek Rosa. It develops and publishes science-based sandbox video games — most notably the Space Engineers franchise, Medieval Engineers, Miner Wars 2081, and Miner Wars Arena — built on its proprietary VRAGE game engine series spanning three generations. The studio's core technology is the in-house VRAGE engine, which features volumetric voxel terrain, modular block-based physics, destructible environments, multiplayer client-server architecture, and integrations with Havok (physics), Kythera (AI), FMod (audio), and Slug (UI middleware).

The company sells one-time perpetual game licenses priced between $4.99 and $29.99 through Steam, Microsoft Store (Xbox), PlayStation Store, and its own web store, and monetizes its flagship titles further through paid DLC packs (Core Systems Pack, Economy 2 Pack) layered on top of free core updates. Distribution is supplemented by a community-led go-to-market motion that emphasizes YouTube content creators, Discord engagement, modding via the ModAPI, and direct communications through the founder's CEO blog. Customers are global individual gaming enthusiasts, with secondary segments including STEM learners and a modding community; the studio has no enterprise customers and no disclosed external investors.

Keen operates with 11–50 employees as a privately held Czech limited liability company (Keen Software House s.r.o.), sitting alongside sister company GoodAI under the Keen Group corporate umbrella. The studio maintains an active release cadence into 2026, including Space Engineers 2 content expansions and Economy 2 systems for the original Space Engineers, signaling ongoing investment in the franchise rather than maintenance-mode operation.

Name

Keen Software House

Legal name

Keen Software House s.r.o.

Website

https://keenswh.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Video Game Development / Sandbox Simulation Games

NAICS

Software Publishers (51321)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

AAA & Premium Game Studios (PC/Console) (MPAFAAAA)

akta.pro secondary industries

Social/UGC & Sandbox Game Studios (Roblox-like) (MPAFAAAF), Game Engines (General-Purpose & Real-Time 3D) (MPAFAFAA), Serious Games & Simulation Studios (Training, Defense, Enterprise) (MPAFAAAH)

Keywords

• Indie game development
• Sandbox simulation games
• Physics-based engineering games
• Proprietary game engine
• Voxel terrain games

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

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

Revenue model

1. Game Sales: One-time purchase model for complete games sold through digital distribution platforms. Games available on Steam, Microsoft Store, PlayStation Store, and direct website store. Prices range from $4.99 to $29.99.
2. DLC Packs and Expansions: Paid downloadable content packs (e.g., Core Systems Pack, Economy 2 Pack) offering new decorative blocks, variants, and additional content. Core game updates are free while premium packs provide enhanced creative options.
3. Space Engineers 2 Premium Content: Space Engineers 2 priced at $29.99 with free core updates. Supporting development directly through purchase helps deliver future updates faster.
4. Modding Tools and API: ModAPI improvements open new possibilities for modders, server gamemasters, and scenario makers. Modding community extends game functionality and longevity.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels11 records

Core offering

Keen Software House is an independent game development studio that designs, develops, and sells sandbox simulation video games centered on engineering, construction, and survival mechanics grounded in real-world physics. Its current commercial portfolio consists of Space Engineers 2 ($29.99), Space Engineers ($19.99), Medieval Engineers ($9.99), Miner Wars 2081 ($4.99), and Miner Wars Arena, all built on its proprietary in-house VRAGE game engine series and distributed via Steam, Microsoft Store, and PlayStation Store.

Product overview

Keen Software House is an independent game development studio that has built a portfolio of sandbox games centered on engineering, construction, and survival mechanics grounded in real science and physics. The core product lineup consists of Space Engineers 2 (the flagship sequel powered by VRAGE3), Space Engineers (the original game), Medieval Engineers, Miner Wars 2081, and Miner Wars Arena. Underlying all games are three generations of proprietary in-house game engines: VRAGE1 (for Miner Wars 2081), VRAGE2 (for Medieval Engineers and Space Engineers with planets), and VRAGE3 (for Space Engineers 2). The studio also releases paid DLC packs — such as the Core Systems Pack and Economy 2 Pack — as add-ons to its games, and maintains a ModAPI for community modding.

Differentiator

Problem solved

Functional benefit

Brands

• VRAGE: Proprietary in-house game engine series developed by Keen Software House. VRAGE stands for 'volumetric rage' and/or 'voxel rage', featuring volumetric objects composed of modular blocks with real physics, inertia, and mass.

Products and services

• Space Engineers 2 Open-world sandbox game set in the Almagest system where players engineer, build, explore, and survive in space, powered by the VRAGE3 engine with planets, survival mechanics, storyline foundations, and a trading economy. Available on PC.
• Space Engineers Original sandbox game about engineering, construction, and maintenance of space works. Players build space ships and stations, pilot ships, and perform asteroid mining. Available on PC (Steam), Xbox, and PlayStation. Priced at $19.99.
• Medieval Engineers Sandbox game about engineering, construction, and maintenance using medieval technology. Players build cities, castles, fortifications, mechanical devices and engines, and perform landscaping and underground mining. Priced at $9.99. A Community Edition is also available.
• Miner Wars 2081 Single-player/co-op/multiplayer game set in a fully destructible open-world environment with full Solar System travel, story campaign, mining, exploration, and survival gameplay. Full source code of the game and VRAGE engine is publicly available. Priced at $4.99.
• Miner Wars Arena Fast-paced arcade game inspired by the classic Tunneler, featuring state-of-the-art top-down view and 2.5D gameplay in a fully destructible environment. Standalone and DRM-free.
• Space Engineers: Core Systems Pack (DLC) Paid downloadable content pack for Space Engineers adding new decorative blocks and block variants to expand creative building options.
• Space Engineers: Economy 2 Pack (DLC) Paid downloadable content pack for Space Engineers with new decorative blocks and variants, released alongside the free Economy 2 Update.

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

Feature11 records

Partnerships

Six partnerships are on record, tiered minor and core.

• GoodAIminorOthersSister company also operated by the same ownership group. Both companies share the same headquarters location at Oranžérie in Prague. GoodAI focuses on artificial intelligence development separate from game development.
• Keen PartnersminorImplementation/ SI/ Consulting PartnerGlobal network of partners who provide consulting, implementation, training and other services around Keen products. Partners also help with marketing, lead generation, and reselling products. They receive billing information, technical contact details, and information about customer purchases and interests.
• KytheracoreTechnology or IntegrationAI solution provider for Kythera-based NPC movement with all degrees of freedom for character movement and goal-oriented AI capabilities integrated into the VRAGE engine.
• HavokcoreTechnology or IntegrationPhysics engine middleware provider used in VRAGE3 for realistic physics simulation including water physics, stable constraints, and collision detection.
• YouTube Content CreatorsminorGTM or Marketing PartnerYouTube channels with at least 10,000 subscribers can receive press keys for reviews and Let's Play videos. Content creators can monetize videos via partner programs. Free use of game content for streaming on YouTube and Twitch.
• Steam/ValvecoreChannel Partner/ Reseller/ DistributorPrimary digital distribution platform for PC games. Games available on Steam including Space Engineers 2, Space Engineers, Medieval Engineers, Miner Wars 2081, and Miner Wars Arena.

Scale indicators4 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Hello Games: Developer of No Man's Sky, a space exploration/survival sandbox with ongoing major content updates. Comparable as an independent studio maintaining and expanding a space-sandbox franchise post-launch, with similar post-launch redemption arc and major free updates paired with optional paid content.
• Facepunch Studios: Developer of Rust and Garry's Mod. Comparable indie studio focused on a flagship sandbox/survival game with strong modding community and Steam distribution. Similar one-time purchase model on PC and similar long-lived franchise dynamics.
• ConcernedApe (Eric Barone): Solo developer of Stardew Valley. Comparable as a small, founder-led independent operation running a long-lived, ever-expanding game with paid expansions and active community. Useful scale/structure comparison despite genre difference.
• Re-Logic: Developer of Terraria, a 2D sandbox engineering game with strong modding community support. Closely comparable in indie scale, one-time-purchase business model, modding API investment, and long-running content update cadence that extends game lifespan over a decade.
• Coffee Stain Studios: Developer of Satisfactory and Goat Simulator, Coffee Stain Studios is a closely comparable indie studio building engineering/sandbox games (Satisfactory shares Keen engineering-construction focus) on PC. Similar size, similar one-time purchase model, similar community-driven GTM.

Broad incumbents

• Mojang Studios: Developer of Minecraft, the dominant sandbox game. Larger, Microsoft-owned incumbent in the same sandbox genre whose voxel-based building and creative gameplay pioneered the category that Space Engineers operates in. Comparable in core gameplay mechanics (voxel/block-based building) and STEM-leaning positioning.
• Epic Games: Developer of Unreal Engine and Fortnite. Comparable on the engine side (Unreal is the marquee proprietary game engine competing for attention with Keen's VRAGE) and on the sandbox creative-game side (Fortnite Creative). Represents both a competing engine and a competing sandbox ecosystem.
• Larian Studios: Independent AAA developer (Baldur's Gate 3, Divinity series). Comparable as an independent European game studio that built proprietary engine technology and successfully competed with major publishers at the AAA tier, illustrating the indie-studio-to-premium-game trajectory Keen is pursuing with SE2.
• Roblox Corporation: Operator of the Roblox UGC platform and sandbox creation ecosystem. Comparable as a sandbox/UGC platform where users build and modify content, though much larger and free-to-play with developer monetization. Represents the dominant incumbent in user-generated sandbox content.

Others

• Unity Software: Provider of the Unity game engine. Comparable as the alternative third-party engine route Keen explicitly rejected by building VRAGE in-house. Useful reference point for understanding the build-vs-license tradeoff Keen's proprietary engine strategy represents.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/MinerWars
• YouTubeyoutube.com/user/SpaceEngineersGame
• Facebookfacebook.com/KeenSoftwareHouse
• LinkedInlinkedin.com/company/keen-software-house
• Instagraminstagram.com/keenswh
• TikToktiktok.com/@keenswh

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 Keen Software House