Technical Systems Designer

Designing the systems that shape the experience

4+ years of experience making games in bigger teams

Currently based in The Netherlands

A little about me...

Sonny Roovers

"People often feel my work before they see it. I’m like an invisible architect of game feel".

I specialize in the designing systems that improve the experience for the player, like economy, progression, combat, and locomotion. My process runs from documentation and rapid prototyping through iteration, keeping every discipline in sync at every step.

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Development Skills

Design

Systemic thinking at scale

Prototype

Rapid proof-of-concept builds

Iterate

Data-driven refinement cycles

Code

C# · Python · Blueprints

3Cs

Character, Camera & Controls

Solve

Root-cause design analysis

Smaller Projects

Game jams, prototypes, and learning projects.

VR Shooter 3Cs preview

VR Shooter 3Cs

2024
Role Game Systems Designer
Team Solo
Duration 8 weeks

Polished VR shooter template balancing comfort and realism. Features locomotion, weapon, interaction, UI, and AI systems, all tested and iterated for smooth sessions.

  • Research Studied comfort standards and how established VR titles solve movement and interaction problems.
  • Player Systems Built locomotion, orientation, ranged interaction, and a wrist inventory system.
  • Weapons Designed a modular weapon framework with a realistic reload and ammo system.
Sporadic preview

Sporadic

Game Jam 2023
Role Gameplay Designer
Team 14
Duration 3 days

Puzzle platformer where you play as a spore that overtakes other entities with its roots. Use each host's unique traits to navigate and escape the lab.

  • Core Mechanic Designed, documented, and tuned the possession mechanic that defines the entire experience.
  • Player Types Defined distinct host forms, each with different abilities and movement feel.
  • 3Cs Implemented and refined movement, camera, and controls across all forms.
SOULS-like 3Cs preview

SOULS-like 3Cs

2023
Role Game Designer
Team Solo
Duration 2 weeks

Souls-like prototype in Unreal Engine, built by reverse engineering Elden Ring's core systems. Features key combat mechanics and multiple AI types.

  • Reverse Engineering Analysed and documented Elden Ring's character setup and all core features.
  • Implementation Rebuilt core features in Unreal Engine: stamina, poise, hitboxes, and more.
  • AI Implemented multiple enemy AI types to create varied and engaging combat.
Bubble Brawlers preview

Bubble Brawlers

Game Jam 2022
Role System Designer
Team 10
Duration 2 days

Local party game where bubble people fight to be last standing. Push opponents into sharp objects to pop them.

  • Physics System Co-built a custom physics system for bouncy, unpredictable bubble movement.
  • Player 3Cs & Abilities Created the movement, controls, and full ability set.
  • UI & Polish Designed the kill feed UI and co-created the character customization system.
Libble Rabble Remake preview

Libble Rabble Remake

2022
Role Gameplay Designer
Team Solo
Duration 8 weeks

Faithful remake of the arcade classic Libble Rabble. Control two characters simultaneously and use the line between them to loop around enemies for points.

  • Gameplay Recreation Reverse engineered and rebuilt the moment-to-moment gameplay of the original arcade game.
  • Collision Detection Built a complex polygon collision system to detect everything enclosed within the player loop.
Protect the Chest preview

Protect the Chest

2022
Role Gameplay Designer
Team Solo
Duration 6 weeks

Twin-stick shooter where you defend a wandering chest from enemy waves. Survive longer, collect upgrades, and fight a steadily scaling challenge.

  • Enemy AI Designed and implemented multiple AI types with distinct behaviors and attack patterns.
  • Upgrade System Created an interactive upgrade system that rewards skilled play.
  • Game Manager Built a difficulty-scaling game manager that keeps the challenge rising over time.
Fishing Simulator preview

Fishing Simulator

2023
Role Gameplay Designer
Team Solo
Duration 6 weeks

Fishing game built from scratch in Python without an editor. Catch and collect all fish types, and upgrade your gear to unlock new ones.

  • Systems Design Designed the core loop, economy, and balance entirely from scratch.
  • Python Development Built all gameplay in Pygame to learn and strengthen Python skills.
Galaga Shader preview

Galaga Shader

2023
Role Technical Designer
Team Solo
Duration 4 hours

Procedural GLSL shader recreating the iconic Galaga star-field background, then converted to HLSL as a custom node in Unreal Engine.

  • Shader Development Recreated the Galaga background in Shadertoy (GLSL), then ported to HLSL for Unreal Engine.
  • Learning Goal First shader project, completed to expand technical knowledge and bridge design with engineering.