Set in the mythical world of ancient Japan, players take on the role of ninja warrior Shinobi. To free the world from the curse of Goaku, Shinobi must recover 5 elemental swords and defeat the Shoguns who wield them. It will take stealth, strength, and the mastery of the mystic arts for Shinobi to battle his way through the 5 lands. While the game shares a name with the third game in the Shinobi series, it's a stand-alone spin-off title not based on the previous game.
The Revenge of Shinobi is on Steam. When the eventual Tavern store launches, you'll be able to buy it through Tavern with full transparency about the +$0.05 convenience markup — but the actual transaction will still happen on Steam, and the game lands in both your Tavern library and your Steam library.