If you previously played an older version (like 1.11 or 1.10) and want to keep that install while also having 1.12, or if Steam updated your game and you missed the older version, you can manage versions via Steam.
Kerbal Space Program (KSP) 1.12 , titled "On Final Approach," is the final major content update for the original game, released on 24 June 2021 Ksp 1.12 Download
He smiled. The next morning he booted up his laptop, the same one he'd used since college, and dug through folders until he found the dusty .sfs save from when he first learned to rendezvous. It was messy—struts misaligned, fuel lines at odd angles—but the heart of it pulsed with memory: a first Kerbal orbit, shaky but triumphant. If you previously played an older version (like 1