https://bugs.winehq.org/show_bug.cgi?id=29521
--- Comment #32 from RealGecko alexandrbezenkov@gmail.com --- OK, I don't know what I was doing wrong but replacing dlls did not help at all. So I simply removed everything from PRG_ENG directory and replaced it with contents of DarkOmenMods.zip you linked. Then everything started working and Xephyr helped to solve the issue with palette. Thanks, I guess your guide may be used as a workaround for the game. However I'm still not sure about dlls.