The Hitchhiker's Guide to the Galaxy
The Hitchhiker's Guide to the Galaxy is a classic interactive fiction game. Although it deviates from the book, the main characters, locations and concepts are included. Unlike in the book, death can come quickly if Arthur fails to observe his surroundings, collect inventory, talk to people and consult the guide. Don't panic.
Story
You are Arthur Dent, an Englishman with a bad hangover wearing a robe with a much needed buffered painkiller and some fluff. Your house has just been destroyed, and shortly after, your planet Earth (which is mostly harmless). You were saved by your friend Ford Prefect, who is not actually an out-of-work actor. He's given you a book (The Hitchhiker's Guide to the Galaxy) and a towel, and now tells you to put a fish in your ear. It must be a Thursday, because you've never been very comfortable with Thursdays.