Swen Vincke was worried that the 100-hour Baldur's Gate 3 would be too short, which is why Larian made a ton of extra areas they wound up cutting: 'I've notoriously always been bad at judging the length of our games'
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There was once intended to be a second, older Moonrise Tower in Baldur's Gate 3 that you'd also explore, but "the game was getting too big, and so we had to cut that out."