iOS also uses an effect where backgrounds and alerts shift slightly when the device is tilted to create a sense of depth (a parallax effect). If you are sensitive to these effects, you can enable βReduce Motionβ to turn off or reduce these effects.
In iOS 10, the βMessagesβ app also added special effects, such as floating balloons and fireworks, which play automatically when a new message is viewed. When you enable βReduce Motionβ you will get the option to stop Message effects from playing automatically.