I would like to ask:
What midnight twist of unspeakable evil lead men to adapt a videogame based on overwhelming difficulty to 5e D&D which is designed to be fairly simple and balanced...
... When Hackmaster is -right there-?!
The answer is Steamforged Games. They have done a number of 5E variants such as
Animal Adventures (which was composed of two separate kickstarters (Dungeons and Doggies/Cats and Catacombs which were originally minatures+ followed by their equivalent of "Uearthed Arcarna" for playing as Dog/Cat pcs in 5E.) which was then combined together into a whole new variant/combo of both known as
Secrets of Gullet Cove. Later this year a further expansion of
Animal Adventures known as
The Faraway Sea is coming which introduces other playable animals such as Pigs, Goats, Foxes, Rabbits and a bunch more for 5E.
Steamforged Games is also the masterminds behind the
Dark Souls trading card game as well as
Dark Souls: The Boardgame. Intentionally enough, the classes in*Dark Souls: The Boardgame* are the VERY SAME EXACT classes in
Dark Souls: TTRPG.