It’s a game of hide-and-seek meets home-alone style traps. Granny can defend herself by slapping the grandson away, while the grandson must find "keys" to unlock better weapons.
Right-click the .zip file and select "Extract All..." Open Folder: Navigate into the extracted folder.
Always keep your antivirus active when handling files from unknown sources. For the most stable version with automatic updates and cloud saves, the Steam version is the recommended choice.
The Granny must complete her daily chores (like cleaning or making tea) while the Grandson tries to stop her using whatever objects he can find—bottles, hammers, or even fireworks!