I have a Wooting keyboard myself. It’s an amazing keyboard for writing, casual usage and gaming.
If you play any games using analog input, like racing games, it’s the best you can get next to a controller.
Also, the keyboard does not need any weird software running in the background, you do all settings and firmware updates on their website, without installing anything.
Yes, they do. Didn’t see any specific game which does not - especially since I used a similar setup with my Steam Controller, which did keyboard, mouse and analog controller input.
It also works with non-specific analog I out games, like GTA V.