Yep! This is a single player game.
I often add this game to bundles with other games, if you want to wait for that before purchasing.
I'm glad you enjoyed the game / exercise!
I was excited when I peeked at the end for your chosen keywords and saw the "Detective Has Face-Blindness" one. I recently found out I have some face-blindness too. I watched a lot of mystery shows, and I could never understand how police or detectives were able to pick out a suspect's face in a crowd either, so that part of your story felt spot-on. I thought the face-blindness prompt would make an interesting twist, it was great to see someone take up the challenge. Fun read!