Keys are a currency that unlock new locations in Where's My Water? 2. They can only be obtained through In-App Purchases, and also through ads if on Android and iOS. On Android and iOS, you can watch an ad to get 1 key and you must wait 24 hours to get the opportunity to watch another ad for a key. Once you have three, you can break the gate and unlock the next location.
As of the latest version, you can no longer use Facebook Friends as a method of obtaining keys.
Trivia[]
- The official Where's My Water? Facebook page formerly promoted Key exchanging.