While some studios choose to build their own engines from scratch, this comes at a sizable cost, tacking on months of development time, not to mention the cost of hiring engineers and getting them up to speed. Game engines provide the underlying technologies that make a game function, such as graphics, rendering, scripting, and AI behaviors. One underlying element powering much of this success is the proliferation of reliable, accessible, and full-featured gaming engines. Video games are a pandemic-proof industry that generated $155 billion in revenue in 2020 and is on track to generate $200 billion in revenue globally by the end of 2023.
