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InfraSim: System Design Game

InfraSim: System Design Game

Cloud architecture simulator

3 ratings
3 reviews
🎮 Games
📚 Education
🕹 Simulation
Free
In-App Purchases

Details

Released
September 11, 2026
Updated
October 30, 2026

Features

Developer

PETALFORM LLC
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InfraSim: System Design Game screenshot #1 for iPhone
InfraSim: System Design Game screenshot #2 for iPhone
InfraSim: System Design Game screenshot #3 for iPhone
InfraSim: System Design Game screenshot #4 for iPhone
InfraSim: System Design Game screenshot #5 for iPhone
InfraSim: System Design Game screenshot #6 for iPhone
InfraSim: System Design Game screenshot #7 for iPhone
iphone
ipad
🧾$29.99
In-App Purchase↘︎
⭐3
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🔄6+ apps
Alternatives↘︎
🎪2 available
Events↘︎
❓8 answered
FAQ↘︎
📦~ in 2 days
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About

Design and manage complex cloud systems in this engaging simulation game. Build architectures, deploy them, and react to real-time incidents and traffic spikes. Learn system design principles through interactive challenges and a guided campaign.

✓Drag-and-drop system component placement
✓Simulated live traffic and incidents
✓Guided campaign with 56 levels
✓Interview Mode with classic system design questions
✓Endless Startup Survival mode
✓Daily Challenge with global leaderboard
✓Sandbox mode for free building
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+1

What's New in InfraSim

1.2.0

October 30, 2026

A new twist on the Daily Challenge every day. From 9 November, each Daily comes with a rule: no cache, a small team, an enterprise SLA, a growth spurt and more. Every week has a theme, from Security week to Outage week. About once a week it is a Fix this day: you inherit a running system with two things wrong, and it is your job to find them. Three new challenges join the rotation: a game leaderboard, a notification fan-out, and a ticket sale that opens mid-run. Survival modifiers: take on Shoestring, Hockey stick or No cache for a harder run, more XP and a record of its own. Your streak now counts any finished run, not just the Daily, and the home screen shows it. A quicker tutorial, and clearer advice after a failed run on a few early levels.

More
3

Subscriptions & In-App Purchases

InfraSim Pro Annual

Every level, unlimited runs, every service

$14.991 Year
3 Days trial
How to cancel InfraSim subscription ⁉️

Events

Read more about The Outage Update
AvailableMajor Update

The Outage Update

Watch things break mid-run, then fix them live

Oct 20, 2026 — Nov 19, 2026

Read More

Read more about Things You Do Not Control
AvailableMajor Update

Things You Do Not Control

Rate limits, retries and a provider's bad night.

Oct 9, 2026 — Nov 8, 2026

Read More

See All

User reviews

Most RecentHighest RatedLowest Rated

Genuinely amazing idea

Please add some music, so I can stay more focused
QQweqwer124

Response from developer

Thank you, this made our day! Music is a great call. Right now InfraSim only has sound effects, so we're adding a calm, focus-friendly soundtrack you can turn on in Settings. If a particular style helps you concentrate (lo-fi, ambient, synth), let us know through Support in the app. Thanks for playing, and for the five stars! : )

Makes system design click

Super easy to pick up and surprisingly addictive. I like that you learn by actually building instead of just reading about concepts.
KKisu0813

Response from developer

Thank you, that's exactly the idea: you learn it by building it and watching it break. Glad it's addictive in the good way! More chapters are on the way. Thanks for playing! : )

Actually makes system design fun

Really fun way to learn and experiment with system design!! I love being able to build an architecture and then actually see how it handles traffic and failures instead of just reading about it! The random events make you think about scalability and tradeoffs, and the sandbox is great for trying different ideas! Love it and can’t wait to see more!
Show more
CComplexInterests30

Response from developer

Thank you! Watching a design handle traffic and failures is exactly what we wanted InfraSim to feel like, so it's great to hear that comes through. There's a lot more since the version you played: 47 levels across 10 chapters and a gentler start, and the next update makes winning feel a lot more satisfying. Glad the sandbox is earning its keep too. Thanks for playing!

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FAQ

What is InfraSim?

InfraSim is a system-design game where players build and manage cloud architectures. It simulates live traffic, costs, and failures based on the player's design choices.

How does InfraSim teach system design?

It starts with basic concepts and gradually introduces more complex ideas through a 56-level campaign. The game also includes an encyclopedia and glossary for deeper understanding.

Can I try InfraSim for free?

Yes, you can play the tutorial, 15 campaign levels, and the first URL Shortener interview round for free without an account.

What are the subscription options for InfraSim?

InfraSim Pro offers monthly ($2.99) or annual ($14.99) auto-renewing subscriptions, or a one-time lifetime unlock. The annual plan includes a 3-day free trial.

What features are unlocked with InfraSim Pro?

InfraSim Pro unlocks Interview Mode, the rest of the campaign, unlimited Survival runs, more Sandbox slots, and the full Daily Challenge archive.

Does InfraSim have ads?

No, InfraSim is ad-free. It also does not feature loot boxes or energy timers.

What devices is InfraSim available on?

InfraSim is supported on iPhone, iPad, and iPod, indicated by its age rating of 4+.

How often is InfraSim updated?

The latest version, 1.2.0, was released on October 30, 2026, suggesting a regular update schedule for the game.