From $0 to a $250 Million Valuation in 6 Years: How the Co-Founder of the Calm App Pivoted From Online Games to Meditation Posted by dumbcapital | Oct 19, 2018 | Startup News, Uncategorized | 0 | Before co-founding Calm, Michael Acton Smith ran the online gaming company that created Moshi Monsters, a U.K. sensation. Here’s his story.