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Spreadsheet-to-Sim Prototype Builder
Build a web app that helps creators model economy and trading simulations in a spreadsheet-like interface, then instantly play the loop through generated UI screens. The product reduces tool confusion and shortens the path from idea to testable prototype for data-heavy games.
Why this matters
You want to make a trading or management game, but the core of your project is not animation or graphics. It is tables, formulas, market logic, events, and immediate feedback. The problem is that your current options are awkward: spreadsheets are fast but not playable, while full engines ask you to make architecture choices before you even know whether the loop is fun. You end up bouncing between tutorials, frameworks, and rough prototypes without confidence that you are building the right thing. A dedicated builder would let you define goods, ports, prices, routes, and events in one place, then test the gameplay immediately.
- · Built for Indie game creators, hobbyists, and solo developers building menu-driven strategy, management, trading, or war simulation games without strong engine experience..
- · Most likely monetization: SaaS subscription.
The Pain · Narrative
You want to make a trading or management game, but the core of your project is not animation or graphics. It is tables, formulas, market logic, events, and immediate feedback. The problem is that your current options are awkward: spreadsheets are fast but not playable, while full engines ask you to make architecture choices before you even know whether the loop is fun. You end up bouncing between tutorials, frameworks, and rough prototypes without confidence that you are building the right thing. A dedicated builder would let you define goods, ports, prices, routes, and events in one place, then test the gameplay immediately.
Score Breakdown
Market Signal
Go-to-Market
Solo indie developers and hobbyists currently prototyping strategy or trading games in spreadsheets before moving to an engine
~50K active globally in the immediate niche
SEO long-tail
$29/month
20 paying users who import or create at least one simulation model and return in a second week
MVP Scope · 1–2 weeks
- Define a fixed schema for goods, locations, prices, events, and routes
- Build a spreadsheet-like table editor in a web app
- Add formula fields for price changes and profit calculations
- Create a basic simulation runner with next-turn progression
- Support CSV import and export for all core tables
- Generate a simple playable UI with buy, sell, move, and event screens
- Add charts for profit, inventory, and route performance
- Save projects to cloud storage with shareable read-only links
- Create two starter templates for trading and naval logistics simulations
- Add onboarding that converts a sample spreadsheet into a working prototype
Differentiation
Why This Might Fail
Self-rebuttal — the most important trust signal
- 1Free spreadsheets may remain good enough for most hobbyists, making conversion to paid software difficult.
- 2The target niche may be enthusiastic but too small unless the product expands beyond game creators into broader simulation designers.
- 3If the generated prototype is too constrained, serious users may outgrow it before becoming long-term subscribers.
Evidence Summary
How AI synthesized this insight — no verbatim quotes
Several commenters independently pushed the creator toward spreadsheet-first thinking, data models, and immediate feedback loops rather than traditional engine-first development. The recurring theme was that these projects are fundamentally table and state driven. That repeated advice indicates a real workflow gap: users need a purpose-built bridge between raw spreadsheet logic and a testable game prototype.
Action Plan
Validate this opportunity before writing code
Recommended Next Step
Build
Strong demand signals detected. Real pain, real willingness to pay — start building an MVP.
Landing Page Copy Kit
Ready-to-paste copy based on real Reddit community language — no editing required
Headline
Spreadsheet-to-Sim Prototype Builder
Sub-headline
Build a web app that helps creators model economy and trading simulations in a spreadsheet-like interface, then instantly play the loop through generated UI screens. The product reduces tool confusion and shortens the path from idea to testable prototype for data-heavy games.
Who It's For
For Indie game creators, hobbyists, and solo developers building menu-driven strategy, management, trading, or war simulation games without strong engine experience.
Feature List
✓ Spreadsheet-style economy and event modeling ✓ Auto-generated playable prototype UI from tables and formulas ✓ Import/export with CSV, Excel, and Google Sheets
Where to Validate
Share your landing page in r/r/gamedev — that's exactly where these pain points were discovered.
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