InfraSim: System Design Game

InfraSim is a system-design game you play with your thumbs. Drag a load balancer, a cache, a database, and a queue onto the canvas. Wire them together. Hit deploy. Watch live traffic flow through the graph you built: latency, cost, and errors move because of what you designed, not a script. Then something breaks. A traffic spike hits at the worst possible moment. A zone goes dark. A bot swarm hammers your login endpoint. You have seconds to find the bottleneck, fix it, and keep your users online, or watch the postmortem explain exactly what took you down. WHAT YOU'LL PLAY - A guided campaign that goes from "single server" to "multi-region, cache-fronted, queue-buffered" architecture, one concept at a time - Startup Survival: an endless run where incidents escalate until something gives - Daily Challenge: one seeded scenario, one shot, a global leaderboard - Sandbox: no rules, no scoring, just build whatever you want and watch it run - A full encyclopedia of the concepts behind every service, written for players who've never touched a terminal HOW IT WORKS Every run is a real (simulated) system: aggregate traffic, queueing curves, capacity, cost, and failure all computed on your device from what you actually built. Nothing here is a quiz with a "correct" architecture, most levels have several viable designs with real trade-offs between cost, latency, and resilience. Play the tutorial and the first twelve campaign levels completely free, no account needed. Sign in only if you want your progress to follow you across devices and a spot on the Daily Challenge leaderboard. InfraSim is an independent educational game. It is not affiliated with, endorsed by, or sponsored by Amazon Web Services, Microsoft, or Google. Provider names are used only to map generic architecture concepts onto terminology you may already recognise. No ads. No loot boxes. No energy timers. Pro unlocks the rest of the campaign, unlimited Survival runs, more Sandbox slots, and the full Daily Challenge archive: everything you've already played stays free forever. SUBSCRIPTION InfraSim Pro is available as a monthly or annual auto-renewing subscription, or as a one-time lifetime unlock. Payment is charged to your Apple ID at confirmation of purchase. A subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel any time in Settings > [your name] > Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://ankit013002.github.io/infrasim-site/terms.html Privacy Policy: https://ankit013002.github.io/infrasim-site/privacy.html