This Category is for Tanks in the original Diep.io. For Arras.io equivalent, see Category:Arras Tier 4 Tanks.
This category lists the Tier 4 Tanks available to play in Diep.io, which available at Level 45. All of these tanks are derived from Tier 3 Tanks with the exception of Sprayer, which is derived from the Machine Gun, a Tier 2 Tank.
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