If you loved The Grudge, try Flight 7500
A bridge between a film you've already seen and one most people haven't. Flight 7500 has roughly 5.3× fewer votes than The Grudge — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Takashi Shimizu, and they both carry the dread mood tag, and they sit in Horror / Mystery / Thriller territory. If that's the register that drew you to The Grudge, the second film will land in a comparable space — through a different lens.
What Flight 7500 is
Over the Pacific at midnight, a single overhead light flickers. Some passengers wake to whispers, others to vanished seatmates. A cabin fever dream spreads faster than turbulence. Japanese horror trades daylight for dark corridors.

