Can you reach the Mun using only rockets that point straight up?

Kerbal Space Program - Up Goer Five Reddit Challenge · 5:26 · Video: Scott Manley · Watch at the source

In short: Scott Manley explores a unique Kerbal Space Program challenge: launching a rocket to the Mun or another moon while keeping all main engines pointed vertically. This video demonstrates various creative engineering approaches to navigate the game's strict constraints while attempting to reach orbit and beyond.

The Up Goer Five challenge mandates that all primary rocket engines must be oriented straight up throughout the launch. While RCS thrusters and Sepatrons are permitted exceptions, the core difficulty lies in achieving orbital insertion and interplanetary travel without traditional engine gimballing or steering maneuvers.

Manley highlights that while many designs fail to complete the full mission, several configurations successfully place upper stages into orbit. Achieving this 'hard mode' milestone proves that even with restrictive vertical thrust, reaching a target moon and returning remains theoretically possible for experienced players.

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