How do I upgrade my tank?
I am playing Diep.io and I would like to know how to become another tank in Diep.io.
For example, I see an Overlord and would like to become that tank.
Best Answer
Level up by destroying squares, triangles, tanks etc. Every 15 levels you will see a bunch of options on the side. Click one to get it! Each class has different upgrades. Overseer can be obtained by upgrading to sniper at lvl. 15, then overseer at 30, then overlord. Press and hold Y to see upgrade chart. Click the pluses on the 8 bars in the lower left-hand corner to get stronger. Good luck...
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