In the United States, Oni sold 50,000 copies by October 2001.[31] It received mixed reviews from critics, with aggregating review websites GameRankings and Metacritic giving the PC version 75.44% and 73/100[6][8] and the PlayStation 2 version 68.69% and 69/100.[7][9] Some reviewers were unimpressed by the minimal detail of the environment graphics,[32] the lack of intelligence on the part of the AI in some situations,[33] and the plot, which was occasionally criticized as underdeveloped.[34] The game's difficulty in combination with a lack of savepoints was sometimes cited as a negative.[35]