To add on to Ericbomb’s resources - make sure you check out Audiogames.net, which is a resource of many indie audio games, many of which were developed by blind people. One of my favorite blind developers to recommend is VGStorm who made the very popular Manamon and other similar games. Check his work out for inspiration.
Once you familiarize yourself with some of the game design used in audio games, try experimenting with how you can combine that with a sighted design. Remember that visually impaired people benefit from graphics!
I also recommend joining the Discord server. There are plenty of blind people there who can give you tips and tricks.