What is causing a blue shade on MacBook Air M1 2020 screen?

Blue shade on the MacBook Air screen, I've started playing some games on my Mac, and sometimes after that, my screen starts to display a blue shade. ![Photo of the MacBook Air screen with a blue shade on it. A full-screen Terminal window is open. ][1] It's not inside the screen, though it's literally on the screen, and it's not dirt. I couldn't find a similar problem here, but I think it's because of overheating, because it's in the same place that the Mac CPU is (when it closes). ![Screenshot of the same Terminal window from the previous photo ][2]