I downloaded and tested it: it opens fine. Tianmaru is right, it is better to aim for web games. Many people are using itch.io from a browser and not the client, and don't want to download the file and unzip it manually. But if you do, I would also recommend having a folder that contains all the build in the zip file, so that people won't need to create a new folder for the game on their own, so that they can just drag and drop the pre-created folder with the game on their computer.
I played around for a bit, I like the idea, but I don't understand how to cooperate with the robot? It seems like it moves randomly?