This is a multiplayer game, where you play as two dueling guys.
However the twist is that both fighters in this game are blind. However they have the power of echolocation of clicking their tongue, but that will temporarily reveal their current position.
The multiplayer round could consist of either
a gun, or a sword. The environment could be a plain silent room, or a complex jungle with other animals to distract you.
Unlike other dualing games, the loss of sight will change the game drastically from a twitch shooter or slasher, into a more calculating psychological game of predicting the movement ahead of the opponent.
Plus blind gamers could play this too!