The interview is in Spanish, but you can use translated close captions.
The guy who created Sugar City also made CPC Soccer.
He made Sugar City "in a rush" so that the game was ready for the CPCRetroDev 2023.
The game is impressive for a one man project working "in a rush" and even has day and night (sudden) changes. He explains how he put all that into code in this video.
https://www.youtube.com/watch?v=vSxzNCMY98c