I would like to see a fun game to help me with differential equations. People still want to learn more advanced topics and I feel that not enough edtech exists

I would like to see a fun game to help me with differential equations. People still want to learn more advanced topics and I feel that not enough edtech exists for learning beyond the formative years, and even less for beyond high school. As an example, Khan Academy has received much praise, but I was less impressed to be honest.