You would really need to stretch your creativity to the maximum on this one.
Maybe just take a look around on games which you already play, or games that are already trending. What makes them popular? What would I add or improve in those games, as if I was developing them? What would I want to see personally in these games?
Now, you can take these ideas and make them into reality! Of course, you can’t always find a “fresh” game idea, but it’s just a base idea you can think of.
Someone seemed to have written a topic on how to use ChatGPT efficiently for coming up with ideas. If you’re stuck with my above questions, maybe try reading the following topic:
Your game must be something that triggers people to say “Oh, no no no, this game is like, really cool, because, like, I have never seen something like it before!! I know there’s lots of games in this genre but this one is special, you gotta try it out, friend!” to their friends.
Achieve that, and only success can follow. Don’t forget about posting on social media like TikTok, YT & YT Shorts, etc.