Fun. I've upgraded my game a few times over the years. It started in 2018 so I started with a version slightly older than that. Some of these changes seem familiar to me. I had a fairly similar experience as my game also has always been C# and simple. I have always carefully avoided any fancy new Unity features and just use the core engine to deliver my game to many platforms. Neat to hear the author worked on the deprecated renames which I also remember.