As someone who has prototyped games, no. This just isn’t true. When stuff happens without sound it feels plain and empty and lifeless and demotivating.
Further, the “is it fun question” is honestly a nonsense question. That’s usually a question about the larger game loop. A lot of games’ gameplay that people like is in fact not actively “fun” but is perhaps engaging or immersive. Which is not something you deduce easily from barebones prototypes.
This advice works ok if it’s just an arcade style game that you play and that’s it, but that’s not really common
Further, the “is it fun question” is honestly a nonsense question. That’s usually a question about the larger game loop. A lot of games’ gameplay that people like is in fact not actively “fun” but is perhaps engaging or immersive. Which is not something you deduce easily from barebones prototypes.
This advice works ok if it’s just an arcade style game that you play and that’s it, but that’s not really common