Abandoned Mansion

A distress call pulls you into the mansion, and by the time you're through the front door, it's already too late. That's your first ten seconds in Abandoned Mansion - no tutorial fluff, just a first-person view, a creaking hallway, and the sinking feeling you're not alone.

You'll pick through hidden rooms for items, wrestle with puzzles that actually make you think, and run into a variety of monsters that don't play fair. Boss fights break up the exploring, and every new level ramps up what's hiding in the dark. The 3D graphics and sound design do a lot of the scaring here - footsteps behind you sound exactly as close as they are.

It's built as a Unity title you play straight in the browser, so there's nothing to install - just courage you'll need to actually bring yourself. If you'd rather trade jump-scares for gunfire, Hazmob FPS: Online Shooter and Zombie Survival Shooter scratch a similar itch with more shooting and less creeping.

Works on desktop, Android, and iOS, free, and it's one of the site's Unity Games Online games - fitting for something this atmospheric.

Explore the mansion, solve its puzzles, and survive whatever's waiting in the dark - that's the whole job. Move with W, A, S, D, crouch with C, and jump with Space when you need to get past something. Press E to interact with items and doors, Tab to check your inventory, and R to reload your weapon.

Left mouse button fires or attacks when a monster gets too close. Take it slow through hidden rooms - the items you find often matter more later, and rushing past them is how the monsters catch you off guard.