1 hour ago, sprotz said:
Not in Uganda. I assume 'Using' means doing everything under the book with it, playing with it, using it as reference. This form of use is unstoppable.
Copyright law only applies to distributing.
If you for example if you were given a 3D model from a game, study it too see how many polygons it has then make your own model with a similar poly count; that is legal; as long as you never shared the copyrighted content. This would be Personal use and is legal in most countries.
Copyright infringement is when you directly use something made by someone else. For example if I draw Mario it is copyright infringement because Mario's design is the IP of Nintendo.
If I just sampled Mario's red and blue color, then made a dragon using the same contrast but with green and yellow, thus using Mario's color as reference, this is legal (unless nintendo decided to make the color contrast also part of the IP). This falls under Personal use.
Copyright law is complex and the penalty for breaking it can be as low as the original owner asking you to change the content or as bad as five years jail time. Then again even a week of jail time could destroy a person's life.
Other penalties will make it impossible to sell games on stores again and you won't even be allowed to receive any outstanding revenue from games that are affected.
If you are outside of the Allied nations, a Third World country, you could even lose trait rights. You will notice that stores like Google Play and Steam have different terms and tax forms for Third World countries; some Third World countries can't even publish on these stores directly.
It isn't worth the risk. There is also a huge benefit in making your own content.