You should package the game in a zip file including al the files and assets you've used. Otherwise the game isn't playable...
Just in case, I've attached a tutorial that allows you to publish the game to be played online:
Viewing post in Space Evader jam comments
I tried to edit it but I couldn't because it was after the submission due date. I do have another version of it on my page in a zip file this time. I hope you get a chance to try it out. https://jimjambimbam.itch.io/space-evader02