Short answers, pulled from the story.
Media Molecule was founded by Mark Healey, Alex Evans, David Smith, and Kareem Ettouney, four former Lionhead Studios employees. The studio was incorporated on the 4th of January 2006, in Guildford, Surrey. Studio director Siobhan Reddy joined shortly after and is occasionally regarded as the fifth co-founder.
Sony Computer Entertainment announced its acquisition of Media Molecule on the 2nd of March 2010, for an undisclosed sum. The deal brought the total number of developers at SCE Worldwide Studios to fifteen.
Media Molecule is best known for LittleBigPlanet (2008), LittleBigPlanet 2 (2011), Tearaway (2013), Tearaway Unfolded (2015, co-developed with Tarsier Studios), and Dreams (2020). The three LittleBigPlanet titles the studio developed or co-developed sold a combined 8.5 million units.
Media Molecule won Studio of the Year at the 2008 Spike Video Game Awards and the Award for Artistic Achievement at the 5th British Academy Video Games Awards, among more than 90 awards earned by LittleBigPlanet alone. The studio has also received Develop Award nominations for Best Independent Developer and Best New Studio.
Before founding Media Molecule, the co-founders built Rag Doll Kung Fu in their spare time while working at Lionhead Studios. Healey demonstrated it at the 2005 Game Developers Conference, and it became the first non-Valve game released on the Steam platform in October 2005.
Kojima visited Media Molecule in 2016 while re-establishing Kojima Productions and was impressed by the studio's relaxed atmosphere, high proportion of female employees, and small team ethos. He set a limit of one hundred employees at Kojima Productions directly inspired by Media Molecule's approach.