1.unreal engine Make your project in unreal engine, and then you can share the project to xxxpizza222@gmail.com and just give me a copy of your whole projectname folder
• The also need unreal engine installed
• if you want to share the game with them you will have to finish your game and build the executable file
2.on unity This assumes you are on Windows, though I think Mac and Linux have similar options. Since it is just a test build, you could select all the files in the build folder, right click, and select “send to zip.” Then you would send that file to your friends, either via e-mail or whatever online upload/download option you choose. I like Dropbox, others use Google Drive, and there are plenty of other options as well. Then when your friends download, they have to extract the files from the zip file but then they have them all.3.with gdevelop make a game with the APP then click on preview then copy the link at the top and send it xxxpizza222@gmail.com to get it up in 1-5 days 4.with cyberix 3d make your game then click on project then publish it should give you a link send that to Info and in 1-5 day is might by up if its good