Go to the asset > data folder, open the file "PTModelGeneralSettings.0.attributes.xml" in Notepad++ Locate the line "<key>Google Play Store</key>" somewhere in that section, you should see "<key>adMobBanner</key>" and enter the admob key below it Then I think to make it show up in game, open this file "PTModelScreen.0.attributes.xml" then locate this line(s) "<key>Ad Banner</key>" and ensure it looks like this: <key>Ad Banner</key> <dict> <key>selectedStringValue</key> <string>kAdMob</string> </dict> I am assuming you bought a buildbox game without the bbdoc file?