Beta build. It reaches the people who turned on "Get beta builds" in Settings, and everyone else once it is promoted.
Epic copies are matched to the database (#63). Highball looked games up by their Steam id only, so an Epic copy of a game with a row, Guardians of the Galaxy among them, was treated as unknown: no verdict on its page, no fix, and no ask for Apple's DirectX 12 support at Play, which left it on DXMT and stopped it at "No suitable D3D12 adapter". Rows can now carry the Epic app name, and a title that matches a row exactly after normalizing counts too. Guardians has its Epic id in the database.
A removed Epic game no longer shows as installed (#63). Epic's install records outlive a deleted environment or game folder. Highball now checks that the folder is still there before calling a game installed.