is already exceptionally well-optimized; the standard digital version requires approximately of free disk space. Why the Official Download is Better
– If you want to save disk space, buy the legitimate version on Steam or GOG, then use CompactGUI or Windows’ native compact /exe compression on the game folder. That reduces size without breaking functionality or risking malware. is already exceptionally well-optimized
If you want a safe, working copy of the game, these are your best bets: working copy of the game