Extract the contents to: \Steam\steamapps\common\Batman Arkham Asylum GOTY\BmGame\CookedPC\
Navigate to BmGame\Config\ and open BmEngine.ini . Find the line bAllowD3D9MSAA=False . Change it to True . Then, add the following line at the bottom of the [SystemSettings] section: RainQuality=3
Published by: Gotham Gaming Gazette Reading Time: 7 minutes
When Batman: Arkham Asylum launched in 2009, it redefined the superhero genre. Rocksteady Studios delivered a claustrophobic, gritty, and atmospheric masterpiece. However, even the most celebrated games show their age over time. One of the most common criticisms leveled at the original release—and even the "Return to Arkham" remaster—is the treatment (or lack thereof) of environmental weather, specifically .
You will see a file named Rain_Physical.upk . Overwrite the existing package. (Make a backup of the original first).