Seems like you need to be signed in to play DOOM 1 & 2 in the DOOM Classics Collection PS4 physical. You will be unable to play the two games offline. : r/LimitedPrintGames
Amazon.com: Doom Slayers Collection - PlayStation 4 Standard Edition : Bethesda: Everything Else
Classic Doom and Doom 2 get native widescreen, mod tools, new modes and more - Polygon
DOOM II Classic PS4 Gameplay - YouTube
DOOM II (Classic)
The original creator, John Romero, has brought up the new level of DOOM 2 with a New Level - Game News 24
Brutal PS4 DooM 2.5 PlayStation 4 Homebrew PKG by SnakePlissken | PSXHAX - PSXHACKS
Doom, Doom II, and Doom III now available for PS4, Xbox One, and Switch - Just Push Start