From the campaign:
BRW Games' new Adventures Dark and Deep™ Players Manual Kickstarter campaign is more than 75% funded, and is looking to cross the finish line. The rules themselves are completely written and have undergone an extensive 18 month open playtest; the Kickstarter is aiming to pay for art and professional editing.
Adventures Dark and Deep is an attempt to explore what the world's most popular role-playing game might have looked like if its creator had been allowed to continue developing it, rather than leaving TSR in 1985.
This work is based on extensive research into Gary Gygax's public statements about his vision for the next edition of the game, using the game's 1st edition rules as a jumping off point. It's not a retro-clone, but an entirely new game with a very familiar feel.