Last week, developer Squad revealed that Kerbal Space Program's owners have downloaded over 1.5 million mods since its Curse mod portal opened back in May.

Read more about the expansion in our interview with Squad and Private Division here and until Breaking Ground is out, try our list of best Kerbal Space Program mods.

To build his automated hovering harrier, [Matt] needed an aircraft. His Kerrier has parts from the Kerbal Aircraft Expansion, B9, and Infernal Robotics mods for KSP, but this is only half the problem.