Gravitational Dart Ninjas is a game invented by Torg. It was originally meant to be simply "Ceiling Darts", played whilst lying on the ground and throwing the darts upwards, but when Torg and Riff discovered darts not sticking in the ceiling would fall and necessitate dodging by the players, Torg decided to incorporate this feature, hence bringing in the "ninja" aspect. As such, the game is slightly dangerous and has also been used for offensive purposes.

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