Hey, I'm sorry to hear it's not working right.
Just to confirm what the issue is, can you check if the following files and folders are present after you extracted it:
- Fromage Fortress Demo_Data (This is a folder)
- MonoBleedingEdge (This is a folder)
- Fromage Fortress Demo.exe
- Unity Crash Handler64.exe
- UnityPlayer.dll
All these files need to be contained in the same folder for the game to successfully run.
If those files are present, ensure you are running "Fromage Fortress Demo.exe".
Hopefully that helps. If it doesn't please be sure to let us know and we'll try and help sort it out.