Hello!
Sorry about this! There used to be a readme included with the download, but I guess I forgot to do that this update! I'll make sure to upload a new version with it.
I'll copy and paste it here as a reply:
"To play this game you will need to download the Quest engine. This is available at:
Quest for Windows - download free software to make text adventure games (textadventures.co.uk)
Install Quest, open it, and simply run the file in it to play the game."
The games I make in the future won't need Quest to be ran, you'll just be able to run the executable or whatever. Sadly this is a limitation of the engine that I was using to make my games before and there's not much of a way around it other than to install the engine itself.