Add the ability to make the costs more customisable.
An example could be a price increase with each upgrade, making the final most powerful upgrade a more considerable cost compared to the first upgrade.
Similarly fuel could be customised per car type - for example if it was a disel car it would cost more than a petrol etc.
This could be done per car type.
Add the ability to make the costs more customisable. An example could be a price increase with each upgrade, making the final most powerful upgrade a more considerable cost compared to the first upgrade. Similarly fuel could be customised per car type - for example if it was a disel car it would cost more than a petrol etc. This could be done per car type.