Players are apparently spending 'tens of hours' building factories in Arknights: Endfield as dev says the 'sandbox' mechanics set the game apart

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• Arknights: Endfield is proving popular with players, according to developer Hypergryph
• Its apparently down to its unique factory building mechanics
• The studio says players spent more time playing Arknights: Endfield on average than "other similar games" thanks to them