IOI bought Hitman back a few years ago, which is why World of Assassination is a thing. Before that, Ubi ruined it with a billion different packages. Now it’s a simple thing to get all three (modern) games.
You can tag it on the store page. If enough people do that, the tag shows on the page for everybody. If that happens with enough games, valve sometimes officially adopts the tag.
Oop, thank you! That’s what I get for posting in the middle of the night.