Best layout checklist

1 · Core

• Highest-income / hardest-to-replace pets sit in the smallest defendable room.
• No pet reachable from an outer edge without crossing an inner barrier.
• Don’t park every gate pet against one shared wall.

2 · Offset

• Second barrier seams are offset from the core seams (one straight breach ≠ full clear).
• Decoy / lower-value pads face the common entry; valuables deeper.
• Stand outside and mentally trace every straight line to Core.

3 · Delay

• Force turns / height changes before the inner layer.
• Traps sit on the forced path, not empty floor attackers can walk around.
• Goal: enough seconds to return and use gear before Core is open.

4 · Owner lane

• Short internal path to collect/repair without dismantling defenses.
• Owner lane does not create a visible shortcut from the public entrance.
• Walk the lane after every rebuild (owner lane leaf).

Self-test (before you leave)

• Ask a friend (or alt) to raid while you watch — use raid test checklist.
• Time entrance → first Core pet; fix the fastest line only, then retest.
• Confirm a broken outer block still leaves an inner barrier.
• Confirm best pet cannot be grabbed from outside a wall.