Sighted person here. Folks, feel free to disagree with me as I'm a guest in your house.
I've been learning about accessibility the past few years, and reading the posts here to get a better understanding of the needs of different people. I have a lot to learn, but, hopefully no one minds my posting a response.
1. I strongly recommend watching some of Haben Girma's lectures or reading her excellent book to understand more about the experience of a blind person; in her case, she is deafblind.
$1 is a good start.I suspect you will be surprised once you get an understanding that the biggest limiter to the potential of many blind people is sighted people's lack of imagination of what they can accomplish.
2. Separate is never equal. By creating a game 'for blind people' as opposed to a great game that blind people can also play, you're basically fencing people off from one another. And limiting your market.
3. 'Normal' is not the opposite of 'things people with disabilities can use'. Try replacing the word 'blind' with 'male' and see how it reads, especially the line about 'normal' computers. Does it feel a little weird?
4. Learn about accessibility standards, they can help guide you in creating a game that everyone can enjoy. WCAG is the gold standard right now, and by following its suggestions, you'll create something the vast majority of humans on this planet can use happily.