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|Play time||Medium (13h from 15 votes)|
|Links||Wikipedia (ja), Wikidata, VNStat|
|Shops||» JP¥ 1430 @ DLsite|
13 players are locked inside an abandoned building, each with a PDA representing a playing card from A to K and a collar device set around their necks. Each of the 13 PDAs correspond to a different set of objectives, and if a player doesn't fulfill their PDA's objectives in 72 hours, their collar will explode.