I bought this game for two reasons:
1- I enjoy everything from Lovecraft, and finding a board game was amazing. Besides, I did not know what a "collaborative" game was.
2- I can be played solo.
Yes, it is always fun to play with your friends and everything that comes with that, but when you really like a game and you don't find friends or time for that, a solo game is excellent.
You can focus on the story, every little text that gives "flavor" to the board game, and even try different strategies everytime.
You should try