When Phantasmagoria was released I bought the game but it bugged out when I tried to play it. It always annoyed me that I couldn't play it but now I finally was able to after buying it on GOG.com.
Roberta Williams wrote Phantasmagoria. The main character explores a house with many secrets and fans who have played her older games Mystery House and Colonel's Bequest will feel right at home! But with one noticeable difference, this time the place is haunted! Phantasmagoria succeeds on many levels: the story is very intriguing and the atmosphere is great. The game is also manage to start out as slightly creepy and only gets more frightening as the chapters pass by. Gameplay is easy but that was fine with me. In this case it works since I didn't want any overly complicated puzzles to ruin the immersion. Graphics were gorgeous back then but it feels outdated now. There was a lot of work on details around the house and this adds to the positive experience.
In short, if you're into adventure games and horror you don't want to miss this great game.