Kerbal Space Program began with a teenager strapping tin figurines to backyard fireworks and grew into one of the most respected spaceflight simulators ever made. This episode traces how a games director named Felipe, working at a Mexican marketing agency called Squad, pitched a physics-heavy rocket game to his bosses in 2010, shipped a bare-bones alpha in June 2011 with no stability assist and a non-rotating planet, and then let Steam Early Access and a devoted community shape it into a Newtonian sandbox where players learn Hohmann transfers, retrograde burns, aerobraking, and delta-v budgeting by blowing up rockets.

We dig into the clever compromises behind the game, including the patched conic approximation that replaced chaotic n-body physics and the ultra-dense home planet Kerbin that keeps Earth-like gravity on a 600-kilometer sphere. We also cover the endorsements from Elon Musk, Tory Bruno, and Peter Beck, official collaborations with NASA, the B612 Foundation, and the European Space Agency, the Jebediah Kerman plushie that flew on Boeing’s Starliner in May 2022, and the troubled Kerbal Space Program 2, whose February 2023 early access launch, missing features, and layoffs stand in stark contrast to the original.

• How a marketing agency employee turned a childhood firework hobby into a hit indie game
• Why patched conics and a super-dense Kerbin make orbital mechanics playable on a laptop
• How slapstick Kerbal failures trick players into running the scientific method
• The NASA asteroid mission pack, ESA Rosetta probes, and Jeb’s trip to the International Space Station
• Why the Take-Two era and KSP2’s collapse show what corporate pressure does to indie magic