Building powerful tools for game developers.
Design, simulate, and optimize your game systems.
Projects
Espada GameSim
Design and simulate Game Systems. Validate progression, economies, balancing and randomness. Before you ship.
ExploreCustom tools built for game teams
I design and build lightweight web tools that help your team prototype, balance, and operate games faster.
- Replace fragile spreadsheets
- Automate routine design tasks
- Visualize systems and flows
- Prototype ideas in hours, not weeks
Level design helpers
Simple editors and configuration UIs that make level building faster and clearer.
Economy & progression dashboards
Dashboards that expose key curves, pacing, and rewards without digging through giant sheets.
Simulators & internal tools
Small bespoke web apps that replace complex spreadsheets with focused, reusable tools.
Custom workflow tools
Bespoke helpers that fit your team's exact process, from configuration UIs to internal editors.
About Espada
Espada Studio is my personal toolkit turned into a product.
After more than a decade working as a Game Designer specialised in systems, economies, and balancing, I kept running into the same problem: the tools I needed didn't exist, or weren't intuitive enough to use.
So I started building my own. Fast prototypes. Debug utilities. Economy planners. Simulators. Over the years these internal tools became the backbone of how I work.
Espada Studio exists to turn those private tools into polished products so other designers can work faster, think clearer, and build better systems without reinventing everything from scratch.
10+ years as a Game Designer
Extensive experience in game systems design
Systems, economies & balancing
Specialized in complex game mechanics
Technical designer with prototyping skills
Builds tools that actually work
Tools built by a designer, for designers
Intuitive workflows that make sense
Founded by Jelle van der Zwaard, Game Designer.
Join Our Community
Connect with fellow game designers and developers that use any of the Espada tools to their advantage. A great place to connect, share and learn!