Dotris, Mario, there's braille output for Sengoku Jidai and the JFIMA, but it's not so useful there (maybe in SJ if you want to stop and look around quicker).
Dotris works with the braille display directly, and uses it for input and output. It doesn't require a screen reader or any particular translation settings.
Mario, SJ, and the JFIMA all use the title bar, which Jaws and NVDA (at least) send to the braille display when it changes. This means the display must use uncontracted ascii/computer braille, probably En-US.
Assume that I plan to support braille output in any future projects where it can reasonably be implemented. In addition, I want to support input from the braille display, partly because this makes it much more viable as an output method in faster games, but also because I can hardly look at a Focus14 without wishing I could play games with it.