They typically allow you to choose between Russian and English (audio/subtitles) during installation.
Serega_Lus (Serega Lus) is a "repacker" whose work is frequently found on popular torrent trackers and gaming forums like RuTracker, R.G. Mechanics, or Xatab-related sites.
They use high-level compression algorithms to reduce the initial download size.
Always ensure you are downloading from a verified, reputable source. Since anyone can rename a file to include "Serega_Lus," it is easy for malicious actors to hide malware in fake repacks.