Question: is it illegal to make cheats for games

Answer: No, Many games which use in-game purchases consider cheating to be not only wrong but also illegal, seeing as cheats in such games would allow players to access content (like power-ups and extra coins) that would otherwise require payment to obtain. However, cheating in such games is nonetheless a legal grey area because there are no laws against modifying software which is already owned, as detailed in the Digital Millennium Copyright Act.