 If you liked Gantz |  ...then you might like Sword Art Online: Aincrad |
Gantz is a death game where people are forced to to kill. So the premise is similar, although the setting is completely different. One is fantasy, while the other is sci fi. being a game, SOA doesnt have any actual gore, while Gantz is more mature with both gore, and mature content. If you like one, you might enjoy the other if you want to feed on some misery in different forms.
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