Hey there! In order for us to play your game you must first create a build in unity, then zip it/ make a rar file, and then paste it here. If you only have the .exe file we won't be able to play it. Think of it as this. .EXE plays your game, but can it play if has nothing behind it? Like without any game to play?
Just make a build and reupload the submission! 😄