Development hell is a term used to describe a movie or video game project that doesn't seem to be making any progress. It usually involves a lot of money, time, and resources being put into a project but no results being seen. It can happen for a variety of reasons, such as creative disagreements, a lack of ideas, budget issues, bad timing, and so on. When a project is stuck in development hell, it is hard to get out of and can sometimes take years.