[citation needed] In 2012, Keen Software House release their first video game, Miner Wars Arena.

[citation needed] Keen Software House and Marek gained notoriety for their third game Space Engineers, which has sold over 4 million copies.

Space Engineers is a voxel-based sandbox game that launched on Steam Early Access on October 23, 2013,[3] and fully released on February 28, 2019.

During the majority of its developmental life, Space Engineers was updated on a weekly basis based on stated development goals and community feedback.

Since initial launch it experienced major updates adding survival mode, multiplayer, dedicated server support, planets, and more.

Players build cities, castles and fortifications; construct mechanical devices and engines; perform landscaping and underground mining.

[11] Marek is the CEO and CTO of GoodAI and set the mission which is to “develop safe general artificial intelligence - as fast as possible - to help humanity and understand the universe.”[12] In November 2016 Marek published the first research roadmap, outlining the direction of GoodAI focusing on developing topology architectures that support the gradual accumulation of skills.