Why this game isn't on sale at Steam's Summer Sale?

I just wonder why this game left out from the big Steam Summer Sale? The game just got patch, announcement for next-gen and more content and patches. I guess add more players to the player base.

Ghostbusters game is on sale, another Illfonic title, Killer Klowns doesn’t, but that’s brand new title.

maybe they just forgot about it, they dont really care about phg enough

A RETURN TO FORM FOR PHG!
Lets do this all over again like its 2019 Lock down crisis!!

I mean if you weren’t playing this game when it came out ,chances are likely you were hiding in a bunker with no water and power.

Its been 5 years daddio! In highschool years that means instant death.