How to Build a Base in Build a Base & Steal Plants: Walls, Expansion, Stacking and Defenses

Building a base in Build a Base & Steal Plants is the heart of the game: roll for rare plants, build your base, break into other bases, and steal plants while protecting your own. Your walls and defenses are what keep your plants yours. Here's the whole process, from the first tutorial walls to a stacked, defended perimeter you can keep reworking.

A sensible build order at a glance:

The rest of this guide walks the same sequence that playthrough follows, step by step.

Place your first walls

You don't have to figure out building on your own — the game walks you through it on your fresh plot. The tutorial prompts you to place three walls around your base (on console the prompt is "Press R2 to place three walls around your base"), and a preview shows exactly where each piece will sit before you commit to placing it.

Where those walls go is your choice, and it matters. A fully enclosing box around your base is the safe shape: a completely enclosed plot means other players can't simply walk off with your plants — even the ones worth absolutely nothing. Once the walls are up, the space inside the box is where your plants live; if you're still arranging them, see how to place plants.

Upgrade wall tiers with cash

Walls come in numbered tiers — you'll see level one through level four in the shop — and each higher tier is stronger. Everything is gated behind in-game cash, so expect to inspect a level two wall early on, find you can't afford it yet, and come back once your plants have earned it. Along the way you'll also spend on personal upgrades like carry space — bought first in one playthrough, since more carry space means more money — and a better axe.

The tiers open up as you progress; in one playthrough, level four was the next big saving goal. Treat cash flow as the real constraint: the expansion ran 50k and level two barbed wire 100k in one playthrough. Our offline earnings page covers the money that piles up between sessions, and it's worth a quick check of the codes page before a long save-up.

Buy the base expansion

The base expansion opens more build room on your plot — it cost 50k cash in one playthrough. In that same run, the level three wall came into reach around the same time as the expansion purchase, so rebuilding the perimeter with the stronger tier was the natural follow-up work. For different ways to shape the plot itself, see base layouts.

Stack walls for height

Upgrading doesn't mean replacing. New walls can be built on top of existing ones — wood on top of stone, a level two on top of a level one — and each added layer gives a bit more protection while making it harder for a raider to jump over.

Keep the limits in mind: even three stacked layers are still jumpable, just harder, and raiders can pick at your walls while they break in. Height buys you time — raiders have to at least pick at the walls, and by then you may have spotted them — not immunity.

Ring the plot with defenses

Defensive pieces slot into the same build: barbed wire laid all around the outskirts of the plot, and a drill you place down at a spot of your choice. Defenses are cash-gated like everything else — barbed wire can be out of budget early on, and level two barbed wire cost 100k cash in one playthrough. For the arrangements these pieces make up, see base layouts.

Modify your base any time

Nothing about a finished base is locked in. You can take down your own walls — you'll need to if you box yourself in fully and want to get back inside — delete pieces you no longer want, place something temporarily and remove it later, or swap weaker material out for stronger because you want the strongest base possible. A half-upgraded perimeter is completely normal too: a mixture of both tiers along the same wall line is what a work-in-progress build looks like.

Plan for the rebuild after rebirth

Rebirthing wipes the built wall stack, so the base gets rebuilt from scratch afterwards. Rebirth requirements scale as you go — in one playthrough, an early rebirth asked for 100k coins plus an apple tree and a sunflower, while a later one wanted 1 million plus a peach and a lemon — and the stated payoff is cash and upgrades. After a rebirth, buy carry space first (more carry space means you earn more money), then start laying walls again.

That's the loop: box in your plants, climb the wall tiers, expand and stack, add defenses, and rework the build whenever your setup changes.