Defold (Lua). Mentioned almost as many times at Godot and Unreal was an engine I\u2019d never heard of, Defold. Apparently this is a good engine to check out if you\u2019re developing 2D or mobile games, and it appears that tons of mobile-style games have been shipped on it. If you\u2019re looking for more of a 3D engine, it is probably not what you\u2019re looking for.