Since I've been playing video games since I was a kid and I'm familiar with countless titles and genres, I've developed a skill for giving gameplay to any idea with relative ease on a Game Design Document.
Luminattis Design Document
Example of Game Design Document from the games Luminattis, made with ideas and sketches from the entire Magiklavi team (2011).
Lapin Lune Lever Design Document
Example of GDD from the game Lapin Lune Lever. The entire concept, story, characters and gameplay was projected by me (2012).
Schemes
I usually like to design mechanics using Adobe Flash for creative process before I start documenting the whole idea.
Shapes created for dynamic generation of landscapes and soundtracks in SOLATO (2022).
List of abilities and attacks of three distinct characters (2009).
Bubble Sounds characters, with their respective speeds and octaves (2017).
Relation between time passing, colors and scales, on Jikan to Kukan (2014).