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2025

July 24
Marek’s Dev Diary: July 24, 2025
July 17
Marek’s Dev Diary: July 17, 2025
July 10
Marek’s Dev Diary: July 10, 2025
July 3
Marek’s Dev Diary: July 3, 2025
June 26
Marek’s Dev Diary: June 26, 2025
June 24
Space Engineers 2 Alpha: VS 1.5 – Modding
June 21
Marek’s Dev Diary: June 19, 2025
June 12
Marek’s Dev Diary: June 12, 2025
June 5
Marek’s Dev Diary: June 5, 2025
May 29
Marek’s Dev Diary: May 29, 2025
May 22
Marek’s Dev Diary: May 22, 2025
May 15
Marek’s Dev Diary: May 15, 2025
May 8
Marek’s Dev Diary: May 8, 2025
May 1
Marek’s Dev Diary: May 1, 2025
April 28
Space Engineers: Fieldwork Live Now!
April 17
Marek’s Dev Diary: April 17, 2025
April 14
Space Engineers 2 Alpha: Vertical Slice 1.2 released!
April 11
Marek’s Dev Diary: April 11, 2025
April 4
Marek’s Dev Diary: April 4, 2025
March 28
Marek’s Dev Diary: March 27, 2025
March 20
Marek’s Dev Diary: March 20, 2025
March 13
Marek’s Dev Diary: March 13, 2025
March 8
Space Engineers 2 Alpha: Vertical Slice 1.1 – Steam Workshop
March 6
Marek’s Dev Diary: March 6, 2025
February 27
Marek’s Dev Diary: February 27, 2025
February 20
Marek’s Dev Diary: February 20, 2025
February 13
Marek’s Dev Diary: February 13, 2025
January 30
Marek’s Dev Diary: January 30, 2025
January 27
Space Engineers 2 Alpha Early Access Release
January 23
Marek’s Dev Diary: January 23, 2025
January 16
Marek’s Dev Diary: 2025-01-16
January 10
Space Engineers 2 – Steam Workshop Support
January 9
My Review of 2024 & Plans and predictions for 2025
January 2
Marek’s Dev Diary: 2025-01-02

2024

December 26
Marek’s Dev Diary: 2024-12-26
December 19
Space Engineers 2: Alpha Reveal
December 5
AI People: Now with local LLM
November 10
How Much Will Intelligence Cost in the Future?
November 6
Reality is Our Enemy
October 25
AI People: Update 0.2.0a – The Sitting Pretty Update
October 16
Charlie Mnemonic – Update 5: Introducing Chain-of-Thought and Integrated Recall System
October 14
Space Engineers: Contact
September 19
AI People Alpha Officially Released!
September 17
Elon Musk’s Problem-Solving Mantra Adapted to Game Development
September 4
Charlie Mnemonic Update 4: Focus on searching in memories
August 15
AI People: Alpha Release Date Announced!
August 11
Datacenters powered by solar farms
June 30
State AI: A Government That Works for You
June 26
What Makes A Resilient Civilization?
May 22
Major Charlie Mnemonic update released!
Society for Resilient Civilization – a Manifesto
May 13
Space Engineers: Signal
May 5
Why haven’t we seen any mainstream games utilizing LLM-driven AI NPCs?
April 29
AI People: Announcing the next evolution of gaming AI NPCs
April 27
Moral Obligations to AI NPCs and Simulation Hypothesis
April 24
GoodAI LTM Benchmark v3 Released
March 22
LTM Benchmark: Improvements and new reports
March 10
Solo creators enhanced by a legion of AI agents
March 1
Introducing Charlie Mnemonic: The First Personal Assistant with Long-Term Memory
February 12
Introducing GoodAI LTM Benchmark
January 28
My review of 2023 & Plans and predictions for 2024

2023

November 16
Games in 2033
October 26
Space Engineers: 10 Year Anniversary Update
October 5
Embodied collectives: our progress to date
September 1
LLM Agent taught to control drones
August 31
Space Engineers: Warfare Evolution & Decorative Pack #3
August 24
HALLM: An Agent that Observes and Acts through a Python Terminal
August 7
Future Shock versus Effective Accelerationism
July 20
Space Engineers released on PlayStation!
July 19
Introducing our work on general-purpose LLM Agents
July 1
Beyond Doomers and Denialists: A Balanced View on AI Development
June 29
Collective intelligence in practice: Safety as a human right
May 30
A Tale of Nuclear Blackmail
May 14
My Unexpected Emergence: From LLM Model to Conscious Entity
May 11
PlayStation Space Engineers Beta is live!
April 26
PlayStation Space Engineers Pre-order Update
April 24
Guest post: Jan Hlousek – VRAGE3 Engine Update
April 14
Forbes Interview with Marek Rosa
April 13
Space Engineers: Automatons
April 11
Review of 2022 & Plans for 2023
February 16
Space Engineers: Announcing Automatons Beta Public Test

2022

December 8
Announcing Space Engineers on PlayStation
May 6
Space Engineers Future News
April 19
Space Engineers: Most Wanted
April 7
Medieval Engineers: Community Edition
March 7
Space Engineers Ecosystem
February 3
Space Engineers: Warfare 2 “Broadside”
January 24
Review of 2021 & Plans for 2022
January 17
What are the differences between centralized learning (in monolithic systems) and decentralized learning (in multi-agent systems)?

2021

July 28
Space Engineers: Heavy Industry
July 22
Why am I doubtful about the future of Bitcoin?
April 23
Space Engineers – Warfare 1: Field Engineer
Medieval Engineers in Robert De Niro movie
February 11
Space Engineers: Community Crossplay
January 14
Review of 2020 & Plans for 2021
January 8
My experiments with the evolutionary dynamics of sexual selection

2020

November 25
Space Engineers: Wasteland
September 10
GoodAI announces $300,000 AI Grant fund
August 24
Historical Oranžérie opens in style
August 6
Space Engineers: Server Optimizations
July 27
Oranžérie Opening
June 24
Space Engineers: Sparks of the Future
May 15
Space Engineers for Xbox: First Update
April 15
Space Engineers: Xbox Release
April 3
What would you do if you had no fear?
March 19
Space Engineers: New Planet Triton, Visual Scripting Tool Overhaul & Frostbite Pack
March 17
Medieval Engineers – Update & Leaving Early Access
February 19
Space Engineers: Xbox Release Date & Pre-orders
January 8
Review of 2019 & Plans for 2020

2019

December 19
Space Engineers: Holiday Update
December 4
GoodAI: Badger architecture and learning procedure
October 24
Space Engineers Major Update: 6th Anniversary & Decorative Pack II
August 22
Space Engineers: Economy Update
July 18
Using AI to prevent pressure ulcers in hospitals
June 6
Space Engineers: Build Planner, Small Grid Cryo Pod and Style Pack
April 8
Space Engineers Update: Customizable LCD Screens, Replay Tool, and Decorative Pack
February 28
Space Engineers: Major Overhaul of Survival, Ladders, Leaving Early Access, What’s next?
February 19
Space Engineers: Release Date for the Major Overhaul of Survival & Going out of Early Access
February 14
Medieval Engineers: Update 0.7.1 – Major Overhaul of Audio, Visuals, & Blocks
January 30
Reflection on the First Public Test for the Major Overhaul of Survival
January 16
Space Engineers: Public tests for the Major Overhaul of Survival
January 2
Year 2018 in review, plans for 2019

2018

October 23
Space Engineers: Airtightness & In-game Help
August 30
Reflections on the Human-Level AI Conference 2018
August 28
Medieval Engineers Update 0.6.4: Major Overhaul of Combat
August 3
Medieval Engineers Banner Contest
July 19
Space Engineers: Major Overhaul of Multiplayer
July 18
Solving the AI Race finalists – $15,000 of prizes
June 27
The Results of the Space Engineers NVIDIA Ansel Contest
April 27
Space Engineers NVIDIA Ansel Contest
March 22
Space Engineers: Answering community questions: follow-up to last weeks Q&A
March 13
Space Engineers: State of Development, Open Development in Early Access, Changes to Release System, Xbox One
February 15
The results of the Space Engineers Physics & Engineering Contest
February 2
Space Engineers: Major Overhaul of Visuals, Audio and Wheels
January 18
Launch of “Solving the AI Race” round of the General AI Challenge

2017

December 29
Congratulations to Ben Goertzel on the success of SingularityNET
December 4
Report from the AI Race Avoidance Workshop, Tokyo
November 23
Space Engineers Physics & Engineering Contest
November 21
Medieval Engineers Major Update 0.6: Mechanical Blocks
November 17
Space Engineers: Major Physics Overhaul
November 2
AI Race Avoidance
October 1
Parasitic computing
September 30
Results and Evaluation for Gradual Learning Round of the General AI Challenge
September 25
Space Engineers Skins Sale (Concluded)
September 14
Screenshot & Loading Screen Competition
My vision for the visual style of Space Engineers
September 6
My view on the recent call to regulate autonomous weapons
August 17
Skins, Parachutes & Player Feedback
August 4
Statement on Space Engineers GitHub
May 9
Medieval Engineers – Major Update 0.5 – Intuitivity
April 21
Original concepts of Space Engineers & Medieval Engineers
March 14
Changes to Space Engineers release system
March 7
My video discussion with Socrates on Singularity Weblog
February 27
A blogpost about how the General AI Challenge is different from other AI challenges – by José Hernández-Orallo
February 23
My thoughts on building general AI in a guest post for Singularity Weblog
February 15
First round of General AI Challenge just launched: Gradual Learning – Learning like a Human

2016

December 15
Space Engineers Entering the Beta Development Stage
December 1
GoodAI Releases School for AI – A New Update to Brain Simulator
November 25
December 5 – 10: GoodAI team at NIPS 2016 in Barcelona
November 24
Space Engineers: Public Multiplayer Evaluations Started!
November 21
GoodAI Releases Arnold Simulator Alpha
November 3
GoodAI Framework + R&D Roadmap Now Available for Public Review
October 23
Space Engineers 3rd Anniversary
October 18
Medieval Engineers Re-Launch
August 29
Opening the Search for a CEO, Senior Producer / Game Director, Senior Multiplayer Programmer at Keen Software House
August 25
Guest Post by Jan Hlousek: VRAGE Render & Upcoming Performance Optimizations
August 1
GoodAI One Year Later: Progress to Date and Next Steps
June 15
Marek’s reading list – Endless Frontier: Vannevar Bush, Engineer of the American Century
May 24
KeenSWH Team Structure + New Medieval Engineers Leadership
May 3
Medieval Engineers: Short-Term Roadmap + New Approach to SE/ME Updates
February 26
Space Engineers News: Full Source Code Access with Planets + DX9 Changes
February 10
Introducing Karel Antonín, Keen Software House & GoodAI Composer
February 2
Abundance 360 Conference Takeaways
January 21
What is Intelligence?
January 14
The KSH roadmap for 2016 – Space Engineers & Medieval Engineers
January 12
2015 Year in Review – Keen Software House & GoodAI

2015

December 15
GoodAI – R&D Roadmap – Preview
November 30
GoodAI is heading to North America: NIPS 2015 Montreal & SF Bay Area
November 12
Planets! Because you wanted them
October 23
Celebrating the 2nd Anniversary of Space Engineers
September 16
Another GoodAI Milestone: Attention, Vision, and Drawing
August 18
Stabilization period for Medieval Engineers and Space Engineers
July 21
GoodAI is heading to the AGI-15 conference in Berlin!
July 15
Esprit de corps at GoodAI
July 7
Announcing GoodAI: a Keen Software House sister company in general artificial intelligence
June 24
Keen Software House is moving and expanding: new Prague and Brno offices
June 18
Guest post by Dusan Andras – Space Engineers: Planets!
June 17
USA Road Trip: DARPA Robotics Challenge, the Future of Life Institute, MIRI and the Exponential Finance Conference
June 9
Guest post by Ondrej Petrzilka – Medieval Engineers: Castle siege, Survival, Clans
June 1
Fan meetup in LA – June 16
May 18
General AI team at Keen Software House hits 2nd milestone
May 14
Space Engineers – full source code access, total modifications and 100,000 USD fund
May 5
Medieval Engineers – Multiplayer & development update 5/5/2015
April 17
Guest post by Ondrej Petrzilka – Space Engineers: Planets, scenarios and new multiplayer
April 8
Introducing our general artificial intelligence project with my personal $10M investment
February 24
Barbarians have arrived in Medieval Engineers!
February 22
Guest post by Karel Antonin: Making the music for Medieval Engineers
February 18
Space Engineers: Planets, oxygen, DirectX 11, optimizations and multi-player
January 13
Medieval Engineers

2014

December 17
Space Engineers: Super-large worlds, Procedural asteroids and Exploration
December 3
Space Engineers: Exploration & Call for “player created content”
November 4
Space Engineers – development progress and retail release
October 15
Level design & Stabilization period
September 15
Programming is coming to Space Engineers
August 13
Space Engineers for Xbox One
June 4
Programming in Space Engineers (programmable blocks and HUD)
May 29
Space Engineers – Dedicated Servers and Multi-player
April 4
First-year anniversary of Space Engineers Development
March 31
Results of the “How do you play Space Engineers” survey
March 13
Space Engineers – “Survival mode” update
January 27
Space Engineers – development update 1/27/2014
January 14
Space Engineers – sound design

2013

December 20
IndianTV interviewed Keen Software House team
November 11
Space Engineers sold 100,000 copies in its first 3 weeks
October 30
7 Days Later
October 23
Development update for 9-10/2013
October 8
Every “space engineer” should see Gravity in IMAX
September 25
Answers to your questions #1
September 17
Artificial Gravity in Space Engineers
September 9
Space Engineers announced & Development details
August 7
Making of Miner Wars 2081: Story and Missions
May 24
Postmortem: Miner Wars 2081

2012

October 17
How can a game developer make money on P2P / torrents?
September 20
Greenlight stats for Miner Wars 2081 – we are #21
September 12
Funny bugs in Miner Wars 2081
September 8
2.5D gameplay in Miner Wars 2081
September 6
Hall of fame
August 19
Failure to shoot at our customers
July 9
Finishing ALPHA build – 10:30 PM – Keen Software House
June 27
Can you guess what’s the goal of these missions?
June 2
Saturday at Keen Software House
April 20
Article in SCORE magazine
April 17
Audio Interview for LazyTechGuys / Radical Insider
April 8
AAA game in XNA?
April 6
We are adding support for dirty & damaged prefabs
March 27
GDC 2012 & San Francisco, New York
February 28
Meet the Miner Wars Team at GDC in San Francisco
February 23
Me in a video podcast at games.cz – Fight Club
February 19
Article in czech sci-fi magazine XB1 (ex-Ikarie)
February 14
Miner Wars in Czech TV – Second Time!
Article about me in “Hospodarske noviny”
January 29
Miner Wars Development Costs: How Much Is a Feature Worth?
January 18
18 years of being a programmer
January 10
My interview at www.zive.cz and www.e15.cz
January 4
Rastko’s “making of” of our intro video

2011

December 23
My second and longer presentation at GDS 2011
December 11
Interview with Marek Rosa, held at GDS 2011 by TV Show “Indian”
December 8
My first and shorter presentation at GDS 2011
November 24
Getting a 1 mil EUR investment was super-simple! (part 1)
November 7
Gameplay programming notes
October 31
KILLER feature of Miner Wars 2081
October 22
We were in Czech Television!
October 19
New Release Of Miner Wars
October 10
Miner Wars – Advanced rendering – Voxels, SSAO, HDR, shadows, image space LOD
October 2
Angry German Kid finds Miner Wars
September 23
How to show scale and real world proportions in space
September 5
Release Postmortem & Public Build vs. Test Build & New Logo
September 1
Public Release Featuring Editor
August 30
New release – TEST BUILD – is out
August 28
Upcoming release and moving to a cloud
August 22
Full Solar System with an ability to land anywhere (part 2)
August 16
Full Solar System with an ability to land anywhere (Earth, Moon, other planets, moons, asteroids…)
August 8
Miner Wars – development progress – 8th August 2011
August 1
Miner Wars – development progress – 31th July 2011
July 24
Miner Wars – development progress – 24th July 2011
June 26
Transitioning from Programmer to Leader
June 20
USA 2011 – Los Angeles, E3, …
June 3
Blogging started

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