Games
C# Game Development
The foundation of everything we build in Unity
C# Is Our Primary Tool
Unity runs on C#. Every service we offer, from game development and co-development to mobile porting, performance optimisation, and multiplayer networking, is built on deep C# expertise. This is not a language we dabble in. It is our primary tool across every project.
Our lead developer is a Unity Certified Expert who has written C# professionally for over a decade, including two years on the RuneScape Mobile project at Jagex. That depth of experience means we do not just write C# that works; we write C# that performs, scales, and is maintainable by the next team who touches it.
Why C# for Game Development
Unity's Native Language
All gameplay systems, editor tools, and runtime logic in Unity are written in C#. It is not one option among many; it is the only option for serious Unity development.
Strong Typing & Modern Features
C#'s type system catches bugs at compile time rather than at runtime. Modern language features such as pattern matching, nullable reference types, and records improve readability and reduce errors.
Performance Improvements
Recent C# versions introduced Spans, ref structs, and source generators that bring near-native performance to managed code. These features are especially valuable in tight game loops.
Large Ecosystem
Thousands of NuGet packages, extensive documentation, and a massive community of developers. Finding solutions, libraries, and talent is straightforward.
Cross-Platform by Design
The same C# codebase runs on mobile, PC, console, and WebGL. Write once, deploy everywhere, without maintaining separate codebases for each platform.
Easy Handover
C# is widely taught and well documented. When we hand a project back to your internal team, they can read, understand, and maintain the code without specialised training.
Our C# Expertise
Architecture & Design Patterns
Clean code, SOLID principles, dependency injection, event-driven systems, and component-based architecture. We write code that scales and that other developers can pick up without a week of onboarding.
Performance-Critical C#
Object pooling, struct-based data, Burst-compatible code, and zero-allocation hot paths. On mobile, a single GC spike can drop frames and drain battery. We profile first and optimise where it matters.
Networking in C#
Server-authoritative game logic, custom serialisation, and state synchronisation built in C# through FishNet and custom networking layers. Every networked system we ship is designed to be cheat-resistant and bandwidth-efficient.
Editor Tooling
Custom Unity Editor tools, inspectors, and build pipeline automation written in C#. We build tools that speed up development for the whole team, not just ourselves. Faster iteration means faster delivery.
Testing & Quality Assurance
Unit testing game systems with NUnit, integration testing, and automated QA scripting. Automated tests catch regressions before they reach players and give your team confidence when refactoring.
Cross-Platform Compilation
Same C# codebase compiled for iOS, Android, PC, console, and WebGL. Platform-specific code is isolated behind abstraction layers, keeping the core logic clean and portable.
C# in Our Projects
Domi Online
Server-authoritative MMORPG architecture built entirely in C#. 64-bit progression systems that bypass standard integer limits, custom serialisation for networked gameplay, and a FishNet networking layer supporting 1,000+ concurrent players. Read the case study.
Educational Games
C# gameplay systems built for Cambridge University Press, Museum of London, and EU Horizon 2020 projects during our team's previous role at Fish in a Bottle. Clean, maintainable code designed for long-term institutional use, with multi-language support and accessibility features baked in.
Mobile Optimisation
C# profiling and refactoring to eliminate GC spikes, reduce frame time, and improve thermal performance on mobile devices. Our performance optimisation work consistently delivers measurable improvements on low-end hardware.
Legacy Code Rescue
Taking over poorly structured C# codebases from other developers, refactoring for readability and performance, and shipping the project. Our legacy modernisation service is built on years of experience rescuing stalled projects.
RuneScape Mobile
David's background at Jagex (2017-2019) included large-scale C# systems work on one of gaming's most complex codebases. Performance profiling, UI adaptation for touch, and thermal management on hundreds of device variants, all in C#.
C# Code Quality Standards
Naming & Structure
Consistent naming conventions and project structure across every file. No guesswork for the next developer who opens the solution.
Documentation
XML documentation on public APIs. Self-documenting code where possible, explicit documentation where it matters.
No Shortcuts
No magic numbers, no god classes, no spaghetti. Every class has a single responsibility. Every method does one thing well.
Version Control
Meaningful commits, feature branches, and pull requests on every project. Your commit history tells a story, not a mess.
Code Reviews
All production code goes through review before it ships. Two sets of eyes on every change reduces bugs and improves design.
Automated Testing
NUnit test suites for core game systems. Automated tests catch regressions before they reach production, saving time and money.
When You Need Senior C# Developers
Your internal team is junior and needs a senior C# developer to set the architecture, establish patterns, and mentor the team.
You have inherited a Unity project with messy C# code and need someone to refactor it into something maintainable before adding new features.
You are building multiplayer and need C# networking expertise to implement server-authoritative game logic with FishNet or custom networking layers.
Your game runs poorly on mobile and you need C# performance optimisation to eliminate GC spikes, reduce frame time, and improve battery life.
You need a co-development partner who writes C# to a standard your team can maintain long after the engagement ends. Learn about our co-development service.
Related Services
Unity Game Development
Full-cycle game development in Unity and C#, from prototype to launch across mobile, PC, and console.
Learn More →Co-Development
Senior C# engineers embedded directly in your team. Same tools, same standup, same repo.
Learn More →Performance Optimisation
C# profiling, GC elimination, and frame time reduction for mobile and cross-platform Unity projects.
Learn More →Legacy Modernisation
Codebase rescue, refactoring, and modernisation of legacy C# Unity projects.
Learn More →Hire Unity Developers
Senior C# and Unity developers available for contract and project-based engagements in the UK.
Learn More →
Have more questions about our C# development approach?
Get in TouchNeed senior C# expertise on your Unity project? Talk to our team.
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