Layered defense for your pet base: wall placement, defense blocks earned through rebirths, gear-side protection, and event-window risk management.
Assume every player carries gear that can destroy and enter your base, because the official description says exactly that. Defense is layering: walls and blocks buy time, traps punish entry, pet placement limits losses, and rebirth tiers add permanent defense depth (+3 blocks per tier).
The official description confirms the attacker's toolkit: gear is used to destroy and enter other players' bases. That means any single wall is a delay, not a seal - defense planning starts from 'they will get in' and works backward to 'they will not get out with much.'
The documented raid kit includes bats (Steel through Demon), mobility tools (Speed Coil, Gravity Coil, Dual Coil, Grapple Hook), stealth and trick items (Invisibility Cloak, Body Swap Potion, Shrink Potion), and heavy endgame options (TNT, Magnet, Sniper Rifle). Each rebirth tier hands these to more of the population.
Cash buys crates of construction pieces, and those pieces are your first layer. Place walls so there is no straight walk from the map edge to a pet - every corner a raider turns is time for the owner to react.
Rebirth rewards add +3 defense blocks per tier on top of anything you build, so progression compounds protection: a player at Rebirth 8 owns 24 permanent defense blocks before placing a single purchased wall.
The July 23, 2026 catalog coverage reported named building pieces - Stone, Brick and Gold Blocks, Spikes, and a Laser Door - which matches the in-game shop's defense line. Treat those names as the shopping list when the shop offers them.
Some rebirth gear is defensive. The Bear Trap (Rebirth 8) punishes a predictable entry path; the Juggernaut (Rebirth 9) is a heavy presence for chasing raiders out. Placing traps where you would attack from is the cheapest way to think like the intruder.
Mobility gear also defends: a Speed Coil or Dual Coil shortens your reaction trip from wherever you were farming back to the breach point.
Keep the defensive gear equipped when you log expectation of visitors - event windows and milestone days (the 30K codes, the 35M visits window) historically brought traffic spikes.
Put your highest-income and mutated pets deepest. A Cosmic (2x) or Inferno (3x) pet lost to a raid costs more per second than its placement tier suggests, because sale value scales the same way as income.
Event windows flip defense logic. During a Cosmic Invasion your pets can be abducted and returned mutated - a full base is an opportunity (more mutations) and an exposure (more pets temporarily gone). Plan to stay online during abduction events if the roster matters.
Required rebirth pets deserve the deepest slot: they must stay in your base until the tier is claimed, so losing one resets weeks of holding.
Run this audit after every update and before every log-off. First, walk your own base as if you were raiding it and note the first gap you would use. Second, check that every pet tier you care about (mutated, mythicals, rebirth requirements) sits behind at least two layers. Third, confirm a free pet slot exists so a defensive steal of your own has somewhere to land.
Fourth, spend any surplus Cash on the weakest layer before you spend it on rolls. Defense converts directly into kept income; rolls only convert when luck agrees.
Run this after every update and before every log-off.
Approach your own base the way an attacker would and note the first gap you would exploit. That gap is your next building job.
Every mutated pet, mythic, and rebirth requirement species sits behind at least two layers - walls, defense blocks, or traps - before a raider reaches it.
Keep defensive gear equipped (Bear Trap from rebirth tier 8, Juggernaut from tier 9) and a mobility coil on so the reaction trip home is short.
A free pet slot turns a defensive steal into income. Check it exists before you log off or leave for a raid of your own.
Surplus Cash goes to whichever layer failed the walk-through first. Defense converts directly into kept income.
content events run on a biweekly Saturday rhythm per the game profile wiki, with update windows announced in advance
during abduction-style events your pets can leave and return changed, so a full base is both an opportunity and a temporary exposure.
Source: Sportskeeda mutations guide + build-a-base-and-steals.wiki game profile. Checked 2026-10-06.
Each rebirth tier pays +3 permanent defense blocks alongside the Luck multiplier, pet slots, and gear. They stack with any walls and pieces you build from purchased crates.
No universal layout is documented by the developer. The reliable rule from play: eliminate straight-line approaches and force every raider through at least two turns before reaching pets.
The official description says gear destroys and enters bases, so treat every wall as time-buying. Depth - multiple layers plus traps - is what actually protects the roster.
For abduction-style events (Cosmic Invasion), yes if you want the mutations: pets leave your base and return changed. For Volcano windows the pets stay in place with a smaller mutation chance.
Mutated pets (sale and income both scale), your highest per-second earners, and the specific species your next rebirth requires - those must remain in the base until the tier is claimed.
Open the page that matches the decision in front of you.
