Fast Upgrades (BTD6): Difference between revisions

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# The top path
# The top path
# The bottom path
# The bottom path
If there are two towers with the same tier 4 upgrade, the one that was placed first receives the tier 5 upgrade.
If there are two or more towers with the same tier 4 upgrade, the one that was placed first receives the tier 5 upgrade.


==Challenge rules==
==Challenge rules==