Mega Mall Story — Guide
Opening moves
- Build the bakery, and stop there
The wiki's opening advice is to build a Bakery, and the reason is upkeep. With starting cash, a row of stores puts you in the red immediately. Open one or two, let the loop run, then expand once traffic is steady.
- Assemble your first combo
The easiest one to hit is Girls: Cake Shop + Clothing Store + Flower Shop, adjacent on one floor. The Cake Shop also counts toward the Grocery combo, and the Clothing Store is a cheap early unlock. This is the least money you can spend for a first combo bonus.
- Invest in people before floors
The wiki puts Residential, Park and Office above mall expansion, and the logic is blunt: customers are the denominator, floor space is only the container. If the denominator does not grow, every extra floor just adds upkeep.
- Run tier-one advertising
Menu -> Actions -> Advertise, tier one only. It is the best-value fixed cost in the early game and it lifts the popularity bar directly.
- Push Quality on upgrades
Take Quality perks first and aim for 100. That is what pulls in regular customers. Add Stock only once a store is selling out every cycle.
Core mechanics
| Mechanic | How it works |
|---|---|
| The core loop | Build a store, let customers in to spend, collect Hearts and cash, spend Hearts on store upgrades and cash on floors and investments, raise your star rating to unlock more stores. |
| Three multipliers (the heart of this game) | Combos (31 of them, three buildings adjacent on one floor) x floor compatibility (a store placed on the right floor earns extra Rep and Quality) x transport and population investment (which decides how many customers arrive and where they enter). These multiply. Pouring everything into one of the three returns very little. |
| How combos actually trigger | Three specific buildings must be adjacent on the same floor. This is the biggest mechanical difference from the Hot Springs Story series, where two buildings within two tiles is enough. Here it is three, and they must share a floor. |
| Floor compatibility is two layers | Layer one is universal: every store on 12F-10F gets +50 Rep, 9F-7F +40, 6F-4F +25, 3F-1F +10, B1F-B2F +20, B3F +30. Layer two is per-store: 67 stores each have specific floors where they earn extra (the full matrix is on the Layout page). The two stack, and both stack on top of combos. |
| The four investment lines | Residential, Park and Office decide which customers show up. Mall decides how many floors you can build. The community wiki is explicit about the order: fund housing, parks and offices first, expand the mall later. Customer volume comes before floor area. |
| What Hearts are for | Hearts buy upgrade perks. The same perk is rated tricky at low store levels and gets easier as the store levels up. So upgrading beats spreading: at a higher level the same Hearts buy a stronger perk. |
| Quality before Stock | Early upgrades should go into Quality (the wiki suggests pushing toward 100). High Quality attracts regular customers. Only add Stock when a store is selling out every single cycle. Quality decides whether a customer wants to buy; Stock only decides whether you have enough. |
| Upkeep is the hidden cost | Every store charges fixed upkeep each cycle. Build too many early and cash flow goes negative while your balance sheet looks great. The test is simple: two or three cycles in a row of negative net cash means you have too many stores. |
| Popularity and the news desk | The popularity bar caps your customer flow. Press releases usually add a lot of popularity, and several of them are triggered by things you control: first combo, a special building (cinema, bus stop), a star rating. Bank the controllable ones and fire them together in a promotion season so the gains overlap. |
| Advertising | Menu -> Actions -> Advertise. Tier one is the best value in the game and should be running from the start. |
| Transport decides where customers enter | A bus stop, subway or heliport is not just an extra entrance. It decides which side of the mall people arrive on. Put it badly and customers wander through your low-value floors. Put transport near your high-bonus floors so the walk to your best stores is short. |
| When the game ends | The game tallies your score in year 16. The formula is weighted across several factors and has not been published by Kairosoft, so this site does not print one. |
| What carries into New Game+ | Stores you have unlocked carry over. Facilities and services do not. So spending Hearts on store unlocks late in your first run pays off; spending them on facility upgrades is wasted. |
Common mistakes
- Opening a wall of stores. Upkeep climbs, cash flow goes negative. This is the single most common way a run dies in the first hour.
- Chasing combos and ignoring floors. A combo is a fixed bonus. The high-floor band alone is worth +50 Rep. You need both, and the wrong floor throws that part away.
- Spending Hearts on facility upgrades early. Facilities do not carry into New Game+, so Hearts spent there late in run one are gone.
- Expanding floors too soon. Floors cost cash and permanent upkeep. If traffic has not grown, a new floor is pure drag.
- Placing combos diagonally. The requirement is adjacent on the same floor. Corner-to-corner does not count.
Floor compatibility: the multiplier everyone misses
Most guides explain combos and stop. But combos are a fixed number, and floor compatibility scales with how much you already have, which makes it the bigger lever once your mall is running.
It works in two layers, and the order you read them matters:
| Layer | What it gives | How to use it |
|---|---|---|
| Universal (by floor band) | +50 Rep on 12F-10F down to +10 on 3F-1F | Your default assumption |
| Per-store | Specific floors where one store earns extra | **Check this first** |
The trap is reading only the universal table. A store with an exclusive bonus on B1F moved up to 12F gains the +50 universal band and loses its own bonus. The net can be worse. So for every store, look up its own row first, then use the universal band to choose between the floors that are left.
There is a second trap: the two layers stack with combos as well. If a combo requires all three buildings on one floor, and only two of those three have a bonus on that floor, you are trading one bonus for another. That is a real decision, not a mistake, but you should make it on purpose.
Picking combos you can actually reuse
Thirty-one combos, and you cannot fit them all. The ones worth building first share buildings.
A combo is three buildings locked to one floor, adjacent. If you pick combos that share no buildings, you are committing three tiles per combo forever. If you pick a cluster that overlaps, one floor can serve two or three combos at once.
The Girls combo (Cake Shop, Clothing Store, Flower Shop) is the standard opener because the Cake Shop also feeds Grocery and the Clothing Store is cheap. Before you build anything, check whether a candidate building already appears in a combo you are running. Reuse beats variety every time.
One more constraint people forget: adjacency. Four tiles in an L shape are not mutually adjacent. A three-tile row or an L with all three touching works; a triangle with a gap does not.
Why "invest in people first" is not superstition
The wiki lists Residential, Park and Office above mall expansion, and it is worth understanding the arithmetic rather than just following it.
Every store has fixed upkeep per cycle. Revenue is roughly customers times average spend. Building more stores or more floors raises the upkeep term immediately and raises the revenue term only if customers actually arrive.
So the ratio that matters is revenue per unit of upkeep. Adding a floor when traffic is flat pushes that ratio down. Adding housing when you have empty good floors pushes it up.
A practical version: if your net cash per cycle is not growing, do not expand. Spend on the population lines until traffic rises, then expand into the demand you just created.
Where Hearts go: upgrades before new stores
Hearts are the scarce currency, and there are two ways to spend them: unlock a new store, or buy an upgrade perk for an existing one.
The case for upgrades is that perk difficulty scales with store level. The same perk is marked tricky at a low level and becomes available more cheaply as the store levels up. So a Heart spent upgrading a high-level store buys more than the same Heart spent on a low-level one.
The case for new stores is content: new stores mean new combos and new floor options. That matters, but it compounds later. Unlocking is a one-time gate you clear when you have spare Hearts; upgrades are what actually raise your numbers now.
A rule of thumb that holds up: keep one or two floors equipped properly rather than ten floors equipped badly.
Special buildings: when to place the cinema and the transport
Two kinds of structures are easy to waste: the cinema and the transport nodes.
The cinema is limited to one per mall. It is a popularity event, so place it when you can promote around it, not at the moment you can first afford it. Firing a cinema opening and a press release in the same cycle is worth more than either alone.
Transport (bus stop, subway, heliport) sets the arrival side of your mall. This is the one placement decision that affects every customer for the rest of the run. Put it next to your best-bonus floors so the walk from the entrance passes your highest earners first. Putting it on the wrong end means customers cross your cheap floors to reach your good ones.
Neither shows up in the combo table, which is why both get ignored and why they are worth the attention.
About the score: why there is no formula here
The game tallies a final score in year 16. You will find guides online that give you a formula, usually with precise coefficients.
We do not print one. Kairosoft has not published the scoring formula, the community wiki explicitly flags the calculation as missing information, and a formula with exact percentages that nobody can trace back to a source is a guess wearing a lab coat.
What we can tell you is which factors feed it: revenue, star rating, how many stores you built, and how much of the mall you filled. Those are confirmed by multiple sources. The weights are not.
If you find a verified source for the actual formula, send it over and we will add it with the citation.