Hello Sandpixie. Sorry to hear that. Maybe you downloaded the wrong version? Make sure you download the windows, linux or mac version according to your system. Also maybe something went wrong during the download in the processs and maybe you need to download again. I can't help you with that since the downloads are managed by itch.io so please just try again. If after that it's still not working let me know and send me a screenshot of the error if possible, I'll help to fix it.