Alternate Builds Blacktron II Blacktron II Alternate Builds Instructions Added Large Alt Build Large Builds 6988 – Back A October 24, 2019December 27, 2021 Master Builder 2513 Views From: 6988: Alpha Centauri OutpostName: Sirius Station 1Instructions: View PDF | Download .io File ContributionsName, PDF, and .io file submitted on December 27, 2021 by: IceAge2002