Installed on 981 of the 46,798 servers crawled, 454 of which have players on right now.
Inferred, not declared: these resources are nearly always present when this one is, but frequently appear without it. That asymmetry is what a dependency looks like from the outside.
This deployment indexes membership for the busiest servers only, so it can list 96 of the 981 servers running this. The count above is network-wide.