I will build unity gameplay systems, mechanics and prototypes

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Otavio Rosindo

About this gig

Need a gameplay mechanic, system, or playable prototype for your Unity game?

I can implement clean and functional gameplay systems for existing Unity projects or build a small playable prototype to validate your idea.

I specialize in Unity 2D and mobile game development using C#.

I can help with:

Gameplay mechanics and player interactions

Progression and upgrade systems

Currency, shops and game economy

Energy and cooldown systems

Rewards and unlockable content

UI and HUD logic

Save and load systems

Menus and game flow

Mobile gameplay systems

Rapid gameplay prototypes

I focus on creating systems that are organized, understandable and easy to expand instead of delivering isolated scripts with no structure.

This service is ideal for indie developers who already have a project and need a specific feature implemented, or for designers who want to turn a gameplay idea into something playable.

You will receive the Unity project or implemented feature, organized C# code and a clear explanation of what was added.

For larger or unusual systems, please message me before ordering so I can evaluate the scope and recommend the correct package.

Get to know Otavio Rosindo

Otavio Rosindo

Game Designer Unity Developer

5.0(1)
  • FromBrazil
  • Member sinceFeb 2026
  • Last delivery5 months
  • Languages

    English, Portuguese
I am a Game Designer & Unity Developer focused on gameplay systems, economy/balancing, and monetization (IAP/Ads). I lead GDD, rapid prototyping in Unity/C#, UI/UX, and data-driven playtesting. I seek to contribute to indie or AAA studios with an emphasis on systems, economy, and technical execution in Unity.

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