D2x如出一辙- XL是一个港口的OpenGL的三维射击游戏的经典游戏后裔2为Win32 ， Linux和Mac OS X ，包含许多增强功能和错误修复，同时保持完全向后兼容。-D2X-XL is an OpenGL port of the classic 3D Shooter game Descent 2 for Win32, Linux and Mac OS X, containing many enhancements and bug fixes while preserving full