This version introduced a low-memory version of the game to help it run on less powerful hardware.
Since the request involves a .rar archive, it is important to consider the nature of the file: Reus.Fifth.Anniversary.v1.6.5.rar
Files ending in .rar from unofficial sources can be high-risk. It is standard practice to scan such files with tools like VirusTotal before extracting them, as they can contain malware or unwanted software. This version introduced a low-memory version of the
Patch 1.6: Unlock All Mode, Load of fixes, Low-memory version Load of fixes