本作采用Valve公司《半条命2》的Source引擎，物理效果出色，并且模仿《辐射3》
O O O O B-company I-company I-company I-company I-company I-company I-company B-game I-game I-game I-game I-game I-game O O O O O O O O O O O O O O O O O O O O O O O O O O