To expand your shop in Gacha Capsule Shop Simulator, you must increase your Shop Reputation to specific thresholds, then purchase the expansion permits from the Akihabara City Office NPC. This process is gated by your total earnings in Yen and the completion of specific milestone quests that unlock as your fame grows. Forget just adding one or two machines; true expansion means unlocking entirely new floors and gameplay mechanics.
This guide breaks down the exact requirements for every shop expansion, from your first small upgrade to the ultimate endgame workshop. We'll cover the Reputation, Yen, and quest objectives you need to hit to transform your cramped storefront into an Akihabara landmark.
The Three Pillars of Shop Expansion
Before you can start knocking down walls, you need to understand the three core resources that govern your growth. Every major expansion requires a combination of all three. Neglecting one will halt your progress, no matter how much cash you have.
- Shop Reputation: This is the most important metric. You gain Reputation for every capsule sold, every new figure discovered, and every satisfied customer. Special events, positive interactions with VIPs (like the local Sumo or influencers), and keeping your machines well-stocked and repaired all contribute. Higher-tier machines with rare capsules generate more Reputation per sale. This is your primary progression gate.
- Yen (¥): Cold, hard cash. Expansions are expensive, requiring you to purchase a permit from the city. You'll earn this from machine sales, selling duplicate or rare figures from your personal collection, and winning bets at the nightly Robot Fight Club. A healthy cash flow is critical, as you'll need to balance saving for an expansion with reinvesting in new capsule licenses and better machines.
- Milestone Quests: These are special questlines that become available once you hit certain Reputation scores. They often involve satisfying a specific VIP customer, completing a large bulk order, or achieving a certain collector-level rank. You cannot buy the next expansion permit, even if you have the Reputation and Yen, until the associated Milestone Quest is complete.
Your First Shop Expansion: Breaking Through the Back Wall
Your initial shop is cramped. You can fit a handful of machines and a small display counter, but you'll quickly run out of room. The first expansion is a crucial step that gives you the breathing room to double your machine count and seriously increase your income.
Step 1: Reach 500 Shop Reputation
This will come naturally through the early game. Focus on keeping your initial machines full, completing the tutorial objectives, and engaging with every customer. A key tip is to pet the local stray cats; they grant Maneki-Neko luck boosts that slightly increase your chances of rare pulls, and rare pulls mean more reputation.
Step 2: Accumulate ¥1,000,000
The permit for the back room costs a cool million Yen. This will likely be the biggest financial hurdle you've faced so far. Don't be afraid to sell some of your own rare pulls to get there faster. Winning a few bets at the Robot Fight Club can also provide a significant cash injection to push you over the top.
Step 3: Complete the "Akiba's Newcomer" Quest
Once you hit 500 Reputation, you'll get a visit from a local magazine writer NPC. They'll give you the "Akiba's Newcomer" quest. To complete it, you must:
- Have at least 8 active gacha machines in your shop.
- Successfully stock 3 different capsule series simultaneously.
- Achieve a "Hype Meter" of at least 75% during peak hours (12:00-15:00 in-game time). You raise the Hype Meter by keeping machines full, quickly ringing up customers, and having a variety of popular series available.
Once you satisfy these conditions, the writer will publish a glowing article, completing the quest and unlocking the permit for purchase.
Step 4: Buy the Permit and Expand
With the quest done and the money in hand, head to the Akihabara City Office (marked on your map) and purchase the "Back Room Expansion Permit." The next in-game day, a construction scene will play out, and the back wall of your shop will be gone. This expansion adds 12 new machine slots and 2 additional display cases for your personal collection.
Infographic showing the 4 steps to the first Gacha Capsule Shop Simulator how to expand shop.
Unlocking the Second Floor: Going Vertical
Breaking through the back wall is just the beginning. The second floor expansion is the mid-game goal that establishes you as a serious player in Akihabara. This upgrade grants access to premium, high-capacity machines and unlocks new decoration options to customize your shop's theme.
Step 1: The Jump to 2,500 Reputation
Getting from 500 to 2,500 Reputation is a grind. You need to be efficient. Start investing in the more expensive capsule licenses with higher rarity rates. A single Epic or Legendary pull can give you a massive reputation boost. This is also when you should consider buying the upgraded GCM Plus machines, which become available at player level 12. They have higher durability and larger coin boxes, meaning less maintenance and more consistent reputation gain.
Step 2: The Financial Hurdle of ¥7,500,000
The price of success is steep. The Second Floor Permit costs ¥7,500,000. At this stage, your income should be significant, but this still requires dedicated saving. Focus on identifying your most profitable machine series and dedicate more floor space to them. Participate in the Robot Fight Club nightly; high-stakes bets are essential for raising this kind of capital quickly.
A 4-panel comic showing the journey to unlocking the second floor.
Step 3: The "Gacha Guru" Milestone
At 2,500 Reputation, a wealthy collector NPC will appear and challenge you with the "Gacha Guru" quest. This is a test of your collection's depth. You must deliver a curated set of rare figures to them:
- 5 specific Epic-rarity figures from three different series.
- 1 Legendary-rarity figure from any series.
- 1 full set (all 7 common variants) of the "Mecha Warriors V" series.
Fulfilling this order is tough and will rely on your own gacha pulls. The Maneki-Neko luck boost from feeding cats is absolutely essential here. Once you hand over the collection, the collector will endorse your shop, completing the milestone.
Step 4: The Rewards of a Second Story
Purchase the "Second Floor Expansion Permit" from the City Office. The next day, a staircase will appear in your newly expanded back room. The second floor provides 20 new premium machine slots, which can only house the best GCM Plus and future models. It also unlocks the Shop Customization Menu, allowing you to change wallpaper, flooring, and background music for a fee, further boosting your Hype Meter.
The Final Frontier: The Basement Workshop
The final expansion is the true endgame. Unlocking the basement doesn't just give you more space for machines; it unlocks an entirely new gameplay system: the ability to create and customize your own gacha machines.
Step 1: Hitting the 10,000 Reputation Cap
This is the long haul. Reaching 10,000 Reputation requires a fully optimized, two-floor operation running the rarest and most popular capsule series. You should have a full staff of hired robots handling repairs and checkouts, leaving you free to focus on inventory management and maximizing hype. Achieving the "Machine Empire" and "Full Staff" achievements will happen naturally on the way to this goal.
Step 2: The Ultimate Investment: ¥25,000,000
The final permit, the "Basement Workshop Permit," costs a staggering ¥25,000,000. This amount is endgame for a reason. You'll need to be selling Legendary figures regularly and winning the highest-stakes robot fights to amass this fortune.
Step 3: The "Legend of Akihabara" Achievement
There is no formal quest for this final tier. Instead, the permit only becomes available for purchase after you have unlocked the in-game achievement "Legend of Akihabara." This achievement requires you to:
- Discover at least one Legendary figure from 10 different capsule series.
- Have a total of 40 machines running in your shop.
- Maintain a 90% or higher average Hype Meter for 7 consecutive in-game days.
Once the achievement pops, the permit will appear in the City Office inventory.
Annotated diagram of the Basement Workshop and its four main stations.
Step 4: What the Workshop Does
The basement isn't for customers. It's a private workshop containing four key stations:
- Custom Machine Workbench: Allows you to build your own machine chassis, choosing its color, durability, and capsule capacity from unlocked blueprints.
- Rare Parts Bin: Lets you break down duplicate rare figures into "Gacha Parts," which can be used to influence the odds of your custom machines.
- Capsule Molder: Here, you can combine Gacha Parts with a licensed capsule series to create a "Custom Series" machine that has a higher probability of dropping figures of a certain rarity (e.g., a +5% Epic chance).
- Paint Station: Provides purely cosmetic customization for your custom machines.
This system allows you to create the ultimate, optimized machines to fill your two floors, cementing your status as the undisputed king of Akihabara gacha.
A poster summarizing pro-tips for gaining reputation faster in the game.
Frequently Asked Questions (FAQ)
Q: Can I expand my shop in the wrong order? No, the expansions are strictly linear. You must complete the Back Wall expansion before the Second Floor becomes available, and the Second Floor before the Basement Workshop is possible. Each step requires the completion of the one before it.
Q: Does the machine type affect reputation gain? Yes, absolutely. Basic machines give a baseline amount of Reputation. GCM Plus machines, which unlock at level 12, offer small boosts. Custom machines built in the Basement Workshop can be engineered to provide significant Reputation bonuses, making the endgame grind much faster.
Q: Is there a limit to how many machines I can have? Yes, the limit is tied to your physical space. The starting shop holds around 10-12. The Back Wall expansion brings the total to about 24. The Second Floor expansion adds another 20, for a final grand total of 44 customer-facing machines.
Q: What happens if I fail a milestone quest? Milestone quests don't have failure states in the traditional sense. For example, if you don't have the figures for the "Gacha Guru" quest, the quest simply remains active in your log until you acquire them. You can't be locked out of an expansion permanently.
Final Take
Expanding your shop in Gacha Capsule Shop Simulator is the core progression that drives the entire game. It’s a rewarding loop of investing profits back into your business to fuel even greater growth. By focusing on the three pillars—Reputation, Yen, and Milestone Quests—you can systematically build your tiny shop into a multi-story gacha palace that dominates the Akihabara scene.