I want to make racing game just for my brother and myself so , I don’t want to make it really complex, I want to do it so that it have some CP opponents to race with him in laps, drag race, etc. it have some different cars to play with different environment. but I want to make it little interesting so that he doesn’t get bored of it quickly, like how Fortnite have building mode. like something unexpected. So, if you guys have any good idea can you share it with me.Thanks 
The answerhub is a place for asking specific questions about problems you might be having or about something you’re not sure how to do. Asking questions like this comes off as “design my game for me”. I’d recommend searching for tutorials online about how to implement any specific game feature that you’re considering, then coming back here if you still have questions about how to implement them.
id say this is more a forum post type of thing.