itch.io

well, currently, lets say you are downloading it straight from the the default web browser, which is probably android and on google, you run it as soon as it's downloaded without using any apps, what happens? I ran it right away and it worked normally for me. Though some apps that when you download the apk from the website, needs the whole "install apps from unknown sources" on (becareful using it) 

sometimes the downloads arent apk, but zipped. to get them to go to an apk, just go to your file manager and rename the file so that only .apk is at the end of it. then it should allow you to install it