When you open the files and see this. Double click it and if it says extract, click that, if this doesn't help I don't know what to do.
Viewing post in I downloaded it but I don't know how to open/play???
It's how you're supposed to open it. You're probably doing it wrong :/
First, there's that file that Beardere showed. Click on it once. At the top, you probably will see a thing saying 'Extract files'. Click on that. Then, after it's finished extracting, re-open file explorer. Double-click on the file this time. Then there's a file that say something like 'ddlc_game'. Double-click on that. And there you have it. The DDLC game.