If you're going to pitch something as a game, it needs voice. Integration is simple. What's the problem? Are git incantations too powerful to be spoken aloud?
No?.. Idk what games you play, but there are an endless mountain of games with no voiceovers. It makes a lot more sense for games that have a lot of text (like this one), because reading is far faster than listening to speech. In general, I vastly prefer text to voice.
Why? The majority of the games I have don't include voice.