APK MOD INFO
Name of Game: City Island: Airport Asia
VERSION: 2.3.7

Name of the cheat, mod, or hack (credits: wendgames):
-UNLIMITED CASH/DIAMONDS

City Island: Airport Asia MOD APK 2.3.7 (Unlimited Cash/Diamonds)

Download the CACHE file/OBB file. They should be .zip or .rar files.
Extract the file to your sdcard.
Move the extracted folder to the location: /sdcard/Android/obb