• The Backrooms
• Backrooms 2: Liminal Boogaloo
• Backrooms 3: The Pirate Returns
• Backrooms 4: Everything Must Go
• Backrooms 5: Goofy Slides (different director who doesn't know anything about the Backrooms)
• (10 year gap because they're embarrassed about 5)
• Backrooms Meets SCP
• Backrooms Origins
• Backrooms Meets SCP 2
• Backrooms: Frontrooms
• Backrooms Holiday Special
• Backrooms (reboot)
• Backrooms 2
• Backrooms 3 (where it's revealed the whole reboot trilogy isn't canon; just a dream or separate timeline or something)
• Backrooms: The Final Level (TV series)

I could go on.

(Some of these are jokes, obviously, but your point totally stands. Hell, I'd even watch the joke ones.)