Yes, the KaOs repack generally works on Windows 10 and Windows 11, but because the game runs on the aging (the same as Quake III Arena ), you may need a few "quality of life" tweaks to get it running perfectly:
: Always run the RTCW.exe as an Administrator and in "Compatibility Mode" for Windows XP (Service Pack 3). Why Play Return to Castle Wolfenstein Today? returntocastlewolfensteinv2002repackkaos work
: It perfectly mixes historical World War II combat with "weird science" and supernatural horror. One moment you are sniping paratroopers in a forest, and the next you are fighting undead knights in a crypt. Yes, the KaOs repack generally works on Windows