Two of our games, Winter Tales and Wildflower Quest , are developed using Unity together with a paid toolkit called Adventure Creator. The toolkit allows the development of point and click adventure games (both 2D and 3D) without any coding involved, so it’s totally worth the price. Here’s the asset store link.
Adventure Creator is popular with both the hobbyist and professional developers. Games like Gibbous – A Cthulhu Adventure, Little Misfortune, Jengo or Milkmaid of the Milky Way were all created with AC. Extensive documentation and tutorials are available on the plugin’s official website (that also includes an active forum) or on their Youtube channel in video format. There’s also several other developers that create video tutorials so it’s easy to learn both the basic and complex stuff. I’ll link these resources below.
(Screenshot from the superb Milkmaid of the Milky Way)