If you experience crashes on startup, try editing your sof2sp.cfg file (found in the base folder) and setting seta r_fullscreen "0" to launch in windowed mode first.
The GOG version is DRM-free and includes the "Gold" updates, which consolidate the game into a much more stable package than the original retail discs.
Developed by Raven Software and released in 2002, this sequel took everything that made the original a cult classic and turned the dial to eleven. Today, it remains a fascinating (and still incredibly violent) piece of gaming history. Why It Still Holds Up