Pig Locks are one of the barriers you can come across in Dream Blast. There are two types of locks: numbered locks, and key locks.
To get past a numbered lock, you must blast bubbles of the same color as the lock. The number on the lock shows how many bubbless are needed to open it. Once the total reaches zero, the lock will pop open!
Key locks are straightforward: once the key reaches the lock, the lock will open. The challenge is to clear a path for the key to make it to the lock!