Is it possible to make a game based on a movie, including its actors and used songs in it, in a selfmade game which is for free? (and maybe just offer the user to "buy me coffe"? If not, is it legal to make similar characters with similar names and similar songs (like its based on the movie or as inspirational source)?…
Studios take their trademarks and intellectual property very seriously. Even if you aren't making any money, they could argue that you're voicing opinions or beliefs on their behalf and still sue you for damages to their IP. The actors or their agencies would also sue you for likeness rights. Your best bet is to take…