In DOTA2, what engine does Dota2 use? You can refer to the following:
SourceII. "Dota 2" is also called "DOTA2". It is a game developed by IceFrog, the core map producer of "DOTA", and the American company Valve. It started testing on April 28, 2013 and released the Chinese name "Dota" is the second work in the series.
