Download the zip file to your own desired spot on your computer. Extract the file inside from the zip. Once you access the extracted file, there is a folder inside caled "Builds". Go in there and then into the folder called "TreasureHunt". There you'll find a folder called "PC" which inside has a Unity build .exe filled called "Project Treasure Hunt". Running this lets you play the game!
The game can also be downloaded from the itch.io link below (source code + executable). Follow the same instructions as above when downloaded from itch.io.
Programmers: Victor Enhörning & Carl-Magnus Embring Klang
Graphical Artist: Dennis Holmgren
Sound Design: Mattias Larsson