Build a Base RNG Base Defense Planner

Find the first weak layer in your base and choose one controlled next change for waves, bosses, or offline stability.

Diagnose the first gap

Answer what you can observe in one fixed run. The planner recommends an ordered next test; it does not invent hidden DPS, luck odds, universal coordinates, or a boss-win percentage.

Your current base

Current goalFirst visible failure point

I have a block or trap contributing at first contact.I have ranged damage protected behind or around the front layer.I have a useful middle layer for survivors.I have cleanup coverage before the core.I changed only one variable since my last comparable test.

Ordered next-test plan

1/4 coverage checks

1
Freeze one baseline layout and repeat the same wave or boss test. Change only one placement or upgrade before the next run.
2
Add protected damage behind or around the delaying layer. Use visible range to keep mortars, Teslas, cannons, or another current weapon contributing.
3
Add or strengthen a middle recovery layer so survivors remain under useful pressure after the opening.
4
Reserve cleanup coverage before the core. Do not spend every placement slot at the entrance.

Keep a change only when the same test moves the first failure later. A different wave, boost, item level, or boss attack can make two runs incomparable.

Read the base layout guide Prepare for bosses