Some advantages to playing Tetris in full screen include having fewer distractions during game play, experiencing less eye fatigue and, depending on the version, having more time to decide and complete moves. The full-screen experience also provide a feeling of immersion that helps some players concentrate.
With some operating systems, games run faster and with fewer glitches when they are played in full screen. Some games also show more detail in full-screen mode. On the other hand, some users prefer playing in a windowed screen. The advantages of a windowed screen include having access to notifications and combining game play with other computer tasks.