Subtitles positioned in the center of the bottom of the screen would be easier to read and are less likely to hide any essential visual elements.
How long should subtitles be on screen?
Subtitles should appear and disappear exactly when the words are spoken. However, ensure captions appear on-screen long enough to be read. There should be two lines of text on-screen, at most. Set the minimum time of display to 1.5 seconds for very short dialogue (such as an answer to a question, “Okay”).
Should I play video games with subtitles?
Games have tons of made up words and there can be lots of distractions during the game, subtitles can help out even if you perfectly understand what's being said.