How many doom games are there?

As of October 2023, there are several main entries in the Doom series, including the original "Doom" (1993), "Doom II: Hell on Earth" (1994), "Doom 3" (2004), "Doom" (2016), and "Doom Eternal" (2020). Additionally, there are various spin-offs, expansions, and mobile games, such as "Doom 64," "Doom RPG," and "Doom VFR." Counting all variations, there are over a dozen titles associated with the franchise. The series continues to be influential in the first-person shooter genre, with ongoing updates and community support.