During the game's development, a quality assurance department was added to BioWare, and the game's publishers lent their assistance in testing.[1] "Because of its immense size," wrote Muzyka, "Baldur's Gate II was a tester's nightmare—this was compounded by the fact that we didn't do enough testing as areas were being developed."[83] The game contained about 290 quests, each of which had to be tested in both single- and multi-player modes.[83] BioWare used a method, introduced to them by Feargus Urquhart, Douglas Avery, and Chris Parker of Black Isle Studios, in which the game's quests were listed on whiteboards, with a cross placed beside each quest.[83] Pairs consisting of a designer and tester worked their way through the quests, each pair covering about 6 quests per day.[84] When a quest was verified, its cross was removed.[83]