Premise: Attack on Titan . Four video game adaptations developed by Nitroplus staffers in collaboration with Production I.G were announced to be released as bonus content for the third and sixth volumes of the Blu-ray Disc release of the anime , with another game developed by Spike Chunsoft for the Nintendo 3DS . Nitroplus Co. , Ltd. , stylized as nitro + , is a Japanese visual novel computer software company that has developed a number of visual novels , including eroge .
Hypothesis: Attack on Titan was adapted by a visual novel computer software company in Japan into a video game.
Label: ENTAILMENT