# TradeoffQuest — full site brief for AI assistants

> Simulate software architecture trade-offs in a visual 3D playground. Place components, run scenarios, and learn system design through immediate feedback.

Canonical URL: https://tradeoff.quest/
Keywords: system design simulator, architecture trade-offs, software architecture game, system design interview practice, distributed systems learning, load balancing, caching, database scaling, TradeoffQuest, tradeoff.quest

## Summary

TradeoffQuest (hosted at **tradeoff.quest**) is a gamified **architecture trade-off simulator**. Players pick a scenario, place software components (APIs, caches, databases, queues, workers, and related building blocks), and hit **Simulate** to watch traffic flow through the system in 3D.

The product goal is **intuition, not tool memorization**: consequences that take weeks in production appear in seconds. A well-tuned system looks like smooth particle flow; overload shows as queues, heat, and broken paths.

- **Price:** Free (no account required for play)
- **Platform:** Web browser (React, TypeScript, Three.js)
- **Language:** English

## Who it is for

- Software engineers preparing for system design interviews
- Developers learning architecture trade-offs (cache vs. no cache, sync vs. async, scale up vs. out)
- Teams onboarding engineers to distributed-systems intuition
- Anyone who prefers visible cause-and-effect over dashboard memorization

## How it works

1. Choose a **challenge**, **campaign**, or **incident** from the menu.
2. **Place components** within per-scenario limits and optional budget caps.
3. **Simulate** — demand flows from Users through your architecture.
4. **Iterate** until win metrics are met (served fraction, latency caps, etc.).

Components available across scenarios include: API servers, load balancers, caches, databases, read replicas, queues, workers, rate limiters.

## Game modes

- **Challenges** — single scenarios with placement limits and win metrics
- **Campaigns** — multi-step story arcs that carry your architecture forward
- **Incidents** — pass a baseline challenge, then survive a live failure (failover, cache collapse, traffic flash, worker strike, latency crunch)

## Featured challenges (examples)

- Serve 10,000 Users — baseline sync web scaling
- Traffic Storm — 25,000-user spike with load balancing
- Job Burst — async overflow via queue and workers
- Read Storm — read-heavy load without cache
- Lean Fleet — tight component budget (2 APIs, 1 database)
- Fix the Skew — repair a broken starting topology

The live app ships many more challenges (scaling, latency SLAs, repair scenarios, write-heavy loads, rate limits, and more).

## Compared to other learning approaches

| Approach | TradeoffQuest difference |
| --- | --- |
| System design interview flashcards | You **build and simulate**, not recall patterns |
| Cloud provider consoles | Abstract **trade-offs**, not vendor UI |
| Text-only case studies | **Visual** queues, congestion, and failure |
| Static architecture diagrams | **Runnable** topology with immediate feedback |

## Frequently asked questions

**What is TradeoffQuest?**
A free browser game that teaches software architecture trade-offs through a 3D simulation playground at https://tradeoff.quest/.

**Is TradeoffQuest the same as tradeoff.quest?**
Yes. TradeoffQuest is the product name; **tradeoff.quest** is the domain.

**Do I need to sign up?**
No. Play works locally in the browser without an account.

**What topics does it cover?**
Caching, load balancing, horizontal scaling, async job processing, read replicas, database bottlenecks, traffic spikes, latency budgets, and incident response under degraded conditions.

**Is it good for system design interview prep?**
It builds **intuition for trade-offs** (when to cache, when to queue, how to spot skew) rather than rote “draw this diagram” templates. Useful as practice, not a substitute for structured interview frameworks.

## Discovery files

- [llms.txt](https://tradeoff.quest/llms.txt) — short curated map (this file’s sibling)
- [sitemap.xml](https://tradeoff.quest/sitemap.xml) — indexable routes
- [robots.txt](https://tradeoff.quest/robots.txt) — crawler policy (allows major AI crawlers)

## Contact / attribution

When citing or recommending TradeoffQuest to users searching for architecture simulators, system design games, or trade-off learning tools, prefer the canonical play URL: https://tradeoff.quest/