There’s a trend in video games as of late to go back and either remake old games or just do your own in the series and then release it for free. While I think companies would be flattered they also are understandably a little annoyed. The reason being that that free game cuts into their profit or even damages their image because well you the fan did it so well why can’t so and so get off their back side and do it. Some times these fan projects work out for the best and you get hired or even just get payed for the work. That’s called being lucky. Usually once these really cool projects get released they get cease and desist letters which are a shame but understandable.