Looks like a really fun game! I'd love to play as a ghost trying to spook an unsuspecting family. A few points of feedback from me:
- It would be good to have an explanation for what the end goal of the game is and what the "Frighter-Counter" is on the player side so it's very clear what they're trying to achieve mechanically.
- It was a bit unclear to me who Gladys is- you mention her name in the first paragraph of the GM section but elaborate who she is at the very end, might be good to reshuffle these a bit.
- Are the minuses and pluses in the Residence, Residents and Pet sections applied to all characters at the start? The -1 to all stats might be quite brutal if stacked multiple times or with other negatives, considering the highest stat that the players can have is a 3. Maybe that is countered by Determination, especially if that is stackable.
- Lastly, I can imagine the game can drag on if rolling a 1 keeps resetting the Frighter-Counter. I can see the game as a fun and snappy one shot where you get to team up and terrorize a family as a bunch of ghosts. Maybe that's why the Ectoplasm is also a health pool which can act as a timer in a way, but other than spending it on powers I'm not sure how much you'd lose on a failure. Possibly to make things snappier you can have the last member of the family just run away when everyone else is gone?
Hopefully these are useful! It would be great to playtest it as I think it has a lot of potential!