Game development is a complex process, and even the biggest studios make decisions they later regret. This video breaks down 20 major mistakes that developers still wish they could undo. We look at rushed releases, buggy launches, ignored feedback, and poor communication that damaged promising games. You will see how issues like missing source code, confusing monetization systems, weak optimization, and lack of accessibility can hurt both players and developers. We also cover common pitfalls such as designing for trends instead of gameplay, splitting teams across too many platforms, and forcing always online requirements that frustrate fans. Whether you dream of making your own game or want to understand what happens behind the scenes, this video reveals important lessons from some of the industry’s biggest missteps.