Faster Production



The Increased Production in BTD4 or the Faster Production in BTD5 in an upgrade for the Spike Factory. This upgrade makes the tower produce spikes faster. It is the first upgrade in BTD4 and the first upgrade in the path 2 in BTD5

prices:
 * BTD4: $600 (Easy), $700 (Medium), $760 (Hard)
 * BTD5: $680 (Easy), $800 (Medium), $860 (Hard)