Unreal Engine is the most used Game Engine in the industry (not counting indie/mobile games w/ Unity), especially for AAA games. HeartBreak shared the list. For

Unreal Engine is the most used Game Engine in the industry (not counting indie/mobile games w/ Unity), especially for AAA games. HeartBreak shared the list. For professional development the Unreal Engine makes it possible to make amazing games with a small team of programmers, iteration time is fast making development a lot faster than before or trying to use a custom engine without well developed tools.