Had this weird idea for a horror gamemode based around The Darkroom from Construct in the style of GM_Ghosthunt.

It's in a version of Construct. But the darkroom exists. You can build stuff using unity assets and the physgun, but your constantly beckoned or urged to go into the room. And you feel this paranoia until you investigate. Mabye even seeing stuff in the distance toward that room.

Every instance of the darkroom is randomized. The scares, and events.
Sometimes you'll get ramped up events or completely hostile scares. Or just subtle scares, like hearing music randomly coming from the room (like "It's just a burning memory"). Or going in and feeling like something is following you. Mabye get chased out or in rare instances, the exit gets blocked off. Or encountering the "entity". Or be in the mirror room and seeing something walk behind you or something in your view.

Putting up lights changes nothing except stuff will appear behind you or out if your vision instead of in the darkness. Sometimes they can randomly change colors or turn off.
You can play coop via hosting or lan, but it changes nothing. Just you and friends go find out what's going on.

You them rare events. But the whole time, your wondering why, as the Entity tells you a story, being unpredictable. If the ghost kills you, even a rare chance to close your game or boot you.

But It's there the whole time in the map. But it's only active around and in that room. It wants to trick the player. Catch it off guard and tell a story, and attack when it wants. It's got a mind of its own.
Mabye trick it into looking like a player in the distance, or acting like a NCP walking into the room. Or putting props or stuff around / in the room, mabye even the entire room can change in textures or have textures randomy appear, or a giant gap in the wall to a room. But the actions are significant and personal to the "Ghost".

Haunted Sandbox. Could do a full game like normal sandbox, 20 players or up to 4 players if their taking it seriously.

Was thinking of a version for rp_downtown_v2 also but Idk, Construct seems more interesting.