I have really been thinking,the theme is hard,but here is what I came up with:

●A game in which you play a mobile game in which you can spend the hours of your life as currency

● racing game in which there is a heat bar for your vehicle,Yiou can use nitro boosts and other boosters from shop,but they will heat up ur vehicles.The hooter the vehicle,the slower,and it cools over time.I am thinking of going with this one

Btw I'm just a 15yr old rookie with unity,bosca ceoil and blender.I would really like to get in contact with other gamedevs,as I often get demotivated making games and I wanna be a professional indie gamedev.