Design & Simulate
Game Systems
Validate progression, economies, balancing and randomness. Before you ship.
A mental model for iteration
Build
Model your system with nodes, currencies, and variables—readable enough to share, flexible enough to evolve.
Simulate
Run thousands of step-by-step playthroughs to reveal distributions, bottlenecks, and edge cases, fast.
Iterate
Tweak values, rerun instantly, and watch the impact on pacing, economy pressure, and progression curves.
Compare
Compare configurations side-by-side to choose the best trade-offs. Catch-up vs. grind, generosity vs. tension.
From first prototype to live balance
Design systems, not spreadsheets
Build game systems visually, using intent-driven building blocks instead of formulas and cell references.
Explore variations, without rebuilding
Test variations by switching scenarios, without duplicating or rebuilding your model.
Compare outcomes, not guesses
Run simulations and compare results to understand pacing, variability, and risk before players do.
Join the GameSim Community
Connect with fellow game designers and developers. Get help, share your work, and stay updated on the latest features.
Help & Support
Get answers to questions about setups, formulas, and workflows.
Share Your Work
Showcase your simulations, exchange feedback, and learn from others.
Stay Updated
Follow development updates, feature previews, and changelogs.
Start simulating your game systems today
Design, simulate, and optimize complex game systems in minutes, all in your browser, no installs required.
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