These games and some others shouldn't even be on ZBD for several reasons such as:
1. It doesn't pay users right or the reward is very bad.
2. The applications are terrible and poorly optimized, leaving a terrible experience for users.
3.Various bugs.
4. Because they are poorly optimized, they heat up devices a lot and can cause complications with the devices.

In short, the apps are useless and don't pay, they are a waste of time.