Auto-Miner

Auto-Miner6 GRAM in game (≈600 CROWN at the presale rate), 3 GRAM in the presale
Adds 8 hours to the offline mining window. Windows add up: the base 2 hours plus every purchase you own.
A long window is useless without the warehouse: if it fills up first, the rest is lost. See Warehouse.
Crown Miner