The exact percentage of developers using Unity globally can fluctuate and is difficult to estimate accurately due to the vast number of developers and the dynamic nature of the industry. However, Unity remains one of the most popular game development engines, thanks to its versatility and ease of use. According to the 2020 Game Developer Satisfaction Survey, about 61% of game developers used Unity, but it's important to keep in mind that these numbers can change with the introduction of new technologies and trends.