Bong5 июнь 2016, 23:0805.06.1602.05.163How does one use upgrade sketchesOnce one has an upgrade sketch how does one use it to upgrade a building.
Alyona KolomiitsevaCommunity Manager6 июнь 2016, 10:4106.06.1617.09.158278Enter the Building and press Upgrade. Available Sketches will be deducted automatically.
Bong29 июнь 2016, 15:0729.06.1602.05.163There is no option to use upgrade sketches when one enters a building.
Deleted29 июнь 2016, 17:3929.06.161289The one detail omitted is the building normally has to be level 20 or above before using sketches, except the Infirmary to get above level 13.