Sure, but you might not like the OSTs as much if you haven't played the games they accompany. I usually listen either on Spotify or Youtube. Here are some I've been listening to recently

- Celeste - https://open.spotify.com/album/5OZHQ7KG8k04IOkF50fACO

- SpaceChem - https://open.spotify.com/album/51EoYHhpOsy9l47Txvwi1b

- Chrono Trigger - https://open.spotify.com/album/2kOD9QzcUkeT57RJkNvQpH