Two tracks and both of them go straight for creepy atmosphere. The Haunting of Magnolia Manor is a 2011 online horror game with a tiny but effective soundtrack. "Welcome Guests" does that slow, unsettling ambient buildup with deep reverb and faint melodic fragments drifting in and out like something's watching you from another room.
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Then "Frantic Haunting" cranks everything up with urgent strings and chaotic percussion that sounds like the house itself is coming apart. Just two tracks but they cover the full horror arc from dread to panic. Sometimes less is more with this stuff.
If you like bite-sized horror games that lean hard into sound design over spectacle, this little score punches above its weight.