KSP is intended for which ages of player?

[Grover]

Age doesnt matter, all that matters is your love of a casual sim, or spaceflight, or little green men that keep finding rocket parts to glue together deapite there only being a handful of buildings on their entire planet.

Im 20 and i love the freedom that comes from a seemingly technical field, which can teach almost any gamer the fundamentals of spaceflight, my brother is 14 and loves the freedom to blow up big rockets and land as far from home as possible, and i dare say Sir Manley is older than the two of us combined and he seems to love the freedom to build massive space infrastructure projects claiming the kerbol system for the whole of kerbalkind, and testing the limits of physics in the process