Thought just giving you a video would be the best.
Viewing post in Chick Hatchery jam comments
This is actually a VSync issue and not a problem with the game itself. When the game renders frames faster than your monitor’s refresh rate, it causes a screen tearing effect, which is normal.
If the developer wants to address this, they can simply enable the VSync option in the game engine (if the engine being used supports it) or manually force frames to render at the same refresh rate as monitor.