My technical first game ever was actually a test project I made in Ren'Py. It had only two endings and a choice menu, as I was testing the basics for the program. I was using version 6.12.2 at the time. Sadly I no longer have this test project. Wish I did, as it's fun to look back at how I scripted things (and remember the frusration of getting an image where I wanted it and all the indent mismatches lol). As far as first completed, released game, it was for a challenge to make a bad visual novel, an atrocious piece called "My Magical Girl Romance" which is still available today lol.