How popular was doom the video game

Doom was, and still is, a highly popular video game. To put it in simple terms, many shooter games in the '90s were referred to as "Doom Clones" instead of "first person shooters" as Doom gained popularity. Doom is still popular today, as is shown by the many Doom mods still coming out. A Doom 3 mod that is a remake of Doom 1 is even out, showing how impactful the game is.