dual upgrade or magic upgrade..

direct upgrade to above levels
example, if the Archer tower is at level 9 and the upgrading cost to level 10 is like 2000000, and the cost after level 10 to level 11 is like 4000000, there should be an option like dual magic upgrade , which will let users to directly upgrade the tower from level 9 to directly level 11 but with the merger of both upgrading cost that will be 6000000, and time like 20days,,,

i was thinking lately, that if this feature got implemented in the game it will be nice,,,,



and if it gets implemented , try to keep a better term for this option,,,😂😂😂