Games
Mobile Game Development & Porting
From RuneScape Mobile to hypercasual prototypes. iOS and Android builds optimised for performance on every device.
Cross-Platform Mobile Expertise
We build high-performance mobile games for iOS and Android using Unity, the engine behind over 70% of the top mobile titles worldwide. From casual puzzles to complex multiplayer experiences, we handle the unique challenges of mobile: device fragmentation, battery management, touch-first UX, and store compliance.
Our team has shipped titles that reached millions of mobile players, including contributions to RuneScape Mobile (reaching #1 RPG on the App Store with 10 million players worldwide). Under the Ocean View Games banner, we built Pocket Factory from concept to App Store for Mojo Games, ported and modernised Nova Blast to Android for Foil Hat Games, and shipped educational titles to both platforms. Every build goes through rigorous performance profiling and multi-device QA.
Mobile Game Porting
Already have a PC or console game? We specialise in porting existing titles to iOS and Android without starting from scratch. Our porting process begins with a technical audit of your existing codebase to determine what can be reused and what needs rewriting. For Unity projects, we can typically retain over 80% of the original game logic, focusing development effort on redesigning the UX for touchscreens, optimising rendering and memory usage for mobile hardware, and meeting Apple and Google platform requirements. You provide the build and any available source code; we deliver a mobile-native experience. Typical porting timelines range from 3 to 6 months depending on the complexity of the original title. Read the full technical breakdown in our RuneScape Mobile porting case study, or see our Nova Blast SDK modernisation and Android porting case study for a smaller-scale example.iOS Game Development
We build and optimise for the full Apple ecosystem. Our iOS game development covers Metal-optimised rendering through Unity's URP pipeline, Safe Area layouts for every device generation, TestFlight beta management, and full compliance with Apple's App Store review guidelines.Android Game Development
Android's device diversity demands a specialist approach. Our Android game development uses tier-based optimisation, classifying devices into performance brackets with adaptive quality settings that scale automatically. We target the latest API levels and test across a broad hardware matrix from budget handsets to flagships.Our Mobile Services
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iOS & Android Development
Native Unity builds for both platforms with shared codebase, platform-specific APIs, and compliance with Apple and Google submission requirements.
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Touch-First UI/UX
Intuitive gesture controls, virtual joysticks, haptic feedback, and Safe Area adaptive layouts that feel native to mobile - not a clumsy PC port.
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Device Testing & QA
Comprehensive testing across a wide range of devices, screen sizes, and aspect ratios - from budget Android phones to the latest iPhones and iPads.
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App Store Deployment
End-to-end submission to the Apple App Store and Google Play, including build validation, store asset creation, and compliance reviews.
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Mobile Performance Tuning
Efficient shaders (URP), draw-call batching, texture compression, and frame-rate limiting to prevent overheating and maximise battery life during play.
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Mobile Game Porting
We port PC and console titles to iOS and Android. We assess your existing codebase, identify what can be reused, redesign the UX for touch, and handle store submission.
Mobile Development Services We Offer
Mobile game development is not a single service. Clients arrive with very different starting points: some need a new game built from scratch, others need an existing PC title brought to phones, and others have a live mobile game that is underperforming and needs optimisation. We handle all of these.
Native Mobile Game Development
Building new games from scratch for iOS and Android using Unity as the primary engine with full platform-native feature integration. We develop for both platforms simultaneously from a single codebase, eliminating the cost and drift of maintaining separate iOS and Android projects. Platform-specific polish includes haptic feedback, Dynamic Island support on iOS, and Material You theming on Android.
Every project starts with our full game development process, adapted for the specific constraints and opportunities of mobile.
Mobile Porting
Porting existing PC or console games to iOS and Android. This is more than recompiling for a different target. Mobile porting requires performance optimisation for constrained hardware (thermal throttling, memory limits, GPU budgets), input redesign to translate mouse/keyboard or controller interfaces to touch, and UI adaptation for smaller screens and variable aspect ratios.
Assess your porting complexity with our free Porting Feasibility Checker. For multi-platform projects that include console targets, see our Console Porting service.
Mobile Optimisation
Performance profiling and optimisation for existing mobile games that are underperforming. We profile draw calls, texture memory, shader complexity, and memory allocation to identify bottlenecks. Optimisation covers draw call reduction, texture compression, memory management, shader simplification, and battery/thermal optimisation to reduce sustained CPU and GPU load.
Our target device tier strategy ensures playable performance on mid-range devices, not just flagships. Frame rate stability (consistent 30 or 60fps rather than variable) is a core deliverable. Our Performance Optimisation service covers this in depth, and our Unity Mobile Optimisation Checklist covers the fundamentals.
We have open-sourced the thermal monitoring, memory tracking, and adaptive quality tools we use on mobile projects. Explore the Unity Mobile Performance Architecture toolkit on GitHub.
App Store Launch and Management
Store listing optimisation including screenshots, descriptions, and keyword strategy. We handle the full submission process for App Store and Google Play, including privacy compliance (privacy manifests, App Tracking Transparency, data safety declarations), post-launch update management, and staged rollouts.
Our App Store Launch service handles the entire submission process. Check your readiness with our Platform Readiness Checklist.
Mobile-Specific Technical Challenges
Mobile is not "just another build target." The hardware constraints, input model, and user behaviour patterns are fundamentally different from PC or console. These are the technical realities we navigate on every mobile project.
Performance on Constrained Hardware
Mobile GPUs have a fraction of the fill rate and bandwidth of desktop GPUs. Every shader instruction, every texture sample, every draw call costs proportionally more. Memory budgets on mobile are strict: iOS will terminate apps that exceed memory limits without warning, and out-of-memory crashes are the most common crash category on Android.
Thermal throttling is invisible but devastating. A game that runs at 60fps for the first five minutes but drops to 20fps after ten minutes because the SoC has overheated is worse than a game that targets a stable 30fps from the start. We profile thermal behaviour on mid-range devices as part of every mobile project, not as an afterthought.
Input and UX
Touch input has no hover state, no right-click, and limited precision. Games designed for mouse interaction need fundamental UX rethinking, not just control remapping. Screen real estate is limited: UI that works on a 27-inch monitor becomes unusable on a 6-inch phone. Information hierarchy, progressive disclosure, and context-sensitive controls are essential.
Session length on mobile averages 4 to 7 minutes. Game loops, save systems, and progression need to accommodate frequent interruption and short play sessions. We design for the reality of how people actually play on phones: in queues, on commutes, with one hand.
We cover mobile UX in detail in our Mobile UI Design for Complex Games blog post.
Platform Fragmentation
Android device fragmentation means testing across a representative device matrix, not just the latest Samsung and Pixel. Minimum spec targeting (which chipset generation, which OS version, which RAM tier) is a critical early decision that affects every technical choice downstream.
iOS fragmentation is lower but still meaningful. Supporting older iPhones (iPhone 8 era) versus targeting iPhone 12 and later changes the available GPU features, screen sizes, and memory budgets. WebGL mobile via browser adds another layer: Safari and Chrome have different WebGL capabilities and performance characteristics on mobile.
Our Mobile Portfolio
We do not talk about mobile development in the abstract. Here are specific examples from our portfolio and our team's experience that demonstrate the range of mobile work we handle.
Empires Rise: Strategy on a Phone Screen
Empires Rise is a 4X strategy game built for mobile from the start. The core technical challenge was procedural map generation optimised for mobile memory constraints, reducing peak memory usage through chunk-based loading. The UX challenge was designing touch-first controls for the complexity of a strategy game on a phone screen, with full pan, zoom, and selection gestures that feel natural rather than fighting the hardware.
Pocket Factory: Battery-Conscious Design
Pocket Factory is an idle/tycoon game built for Mojo Games with battery-conscious background processing and lightweight rendering for extended play sessions. The design targets sustained play without overheating, which means careful management of CPU wake cycles during idle progression and minimising GPU load during the rendering loop.
Word Fun World: Low-Spec School Hardware
Word Fun World (built for Cambridge University Press during David and Adam's time at fish in a bottle) is an educational vocabulary game targeting school-issued tablets, often older, lower-spec hardware with limited RAM and storage. Optimisation for minimum-spec iPads and Android tablets was a core requirement, not an afterthought.
RuneScape Mobile: One of Gaming's Most Complex Ports
Our founder David's experience at Jagex included contributing to the porting of RuneScape, a 20-year-old Java MMORPG, to iOS and Android. This is one of the most technically challenging mobile ports in gaming history: adapting a game with two decades of accumulated content, a live player base of hundreds of thousands, and a desktop-native interface to touchscreen devices with a fraction of the processing power.
Read the full technical breakdown in our RuneScape porting blog post.
Mobile Monetisation
Most mobile games are free to play. That means monetisation design is not a separate workstream; it is part of the core game design from day one. We integrate monetisation systems that generate revenue without destroying the player experience.
Monetisation Integration
Free-to-play with in-app purchases is the dominant mobile model. We integrate Unity IAP and RevenueCat with server-side receipt validation to prevent fraud. For ad monetisation, we implement mediation through IronSource, AdMob, or AppLovin MAX for optimal eCPM across ad networks. For children's games, we implement COPPA and GDPR-K compliant monetisation that meets regulatory requirements.
Analytics integration (Firebase, GameAnalytics) is included as standard for post-launch monetisation tuning. Without data on where players drop off, which offers convert, and how session length correlates with spend, you are guessing.
Not sure which monetisation model fits your game? Try our Monetisation Strategy Picker. Our Monetisation service page covers strategy, economy design, and compliance in depth.
Cost and Timeline
These are the two questions every mobile client asks first. The honest answer is "it depends on scope," but we have tools to help you get to a realistic estimate quickly.
What Does Mobile Game Development Cost?
Mobile game development costs vary enormously based on scope, art style, multiplayer requirements, and platform targets. A simple casual game costs significantly less than a complex multiplayer RPG. Rather than listing generic ranges, use our free Cost Estimator to get a ballpark figure based on your specific requirements.
We break down mobile costs in detail in our Mobile Game Development Cost blog post.
How Long Does Mobile Development Take?
New mobile game development timelines range from 3 months for a simple casual title to 12+ months for a complex multiplayer game. Porting an existing game to mobile typically takes 3 to 6 months depending on the complexity of the original title and how much UX rework is needed.
Assess your porting timeline with the Porting Feasibility Checker, or get a custom estimate with our Timeline Estimator.
Why Choose Us?
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Mobile-Native Unity Builds
We build once in Unity and deploy natively to iOS and Android with platform-specific optimisations: Metal rendering on Apple devices, Vulkan on Android, adaptive input systems, and store-compliant build pipelines from day one.
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10M+ Mobile Players Shipped
Our team contributed to RuneScape Mobile reaching #1 RPG on the App Store. Under Ocean View Games, we have shipped Pocket Factory to both stores for Mojo Games and ported Nova Blast to Android for Foil Hat Games.
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Thermal & Battery Profiling
We go beyond frame rate. Our mobile optimisation process includes thermal throttling analysis on mid-range Android devices, battery drain profiling, and tier-based adaptive quality that scales rendering across budget and flagship hardware.
Our Technology Stack
Built on industry-standard mobile architecture:
Our Mobile Development Process
Mobile development requires a unique approach. We follow a rigorous 4-step workflow designed to navigate device fragmentation, strict App Store guidelines, and user retention mechanics.
1. Concept & Mobile UX Strategy
A great mobile game starts with the user interface. We design “thumb-friendly” layouts and plan your monetisation strategy early to ensure high retention.
- Wireframing: Mapping out user flows to ensure menus are intuitive on small screens.
- Monetisation Design: Integrating Ads or In-App Purchases (IAP) naturally into the core loop.
- Technical Spec: Defining supported Android API levels and iOS requirements.
2. Engineering & Optimisation
We build on a shared codebase using Unity, allowing simultaneous deployment to iOS and Android while keeping performance high.
- Efficient Coding: Writing C# scripts optimised for ARM processors to reduce battery drain.
- Asset Compression: Optimising textures and audio to keep the initial download size (APK/IPA) small.
- Regular Builds: Delivering playable prototypes via TestFlight and Google Play Internal Track every sprint.
3. Device Testing & QA
Your game needs to work on a budget Android phone just as well as the latest iPhone. We stress-test on real hardware, not just emulators.
- Fragmentation Testing: Verifying UI scaling across different aspect ratios (notches, tablets, foldables).
- Performance Profiling: Ensuring a stable 60 FPS without overheating devices.
- Compliance Checks: Pre-validating the app against Apple and Google review guidelines to prevent rejection.
4. Store Submission & Launch
We handle the administrative headache of releasing a game. From certificate management to the final “Publish” button.
- Store Setup: Configuring store listings, age ratings, and privacy policies.
- App Store Optimisation (ASO): Advising on keywords and screenshots to maximise organic downloads.
- Live Operations: Implementing analytics tools (Firebase/Unity Analytics) to track player behaviour post-launch.
Ready to reach millions of mobile players? Let’s discuss your iOS & Android project.
Book a Technical ConsultationPlan Your Mobile Project
Free interactive tools to help scope your project.
Check porting feasibilityFind out how complex your port will be and what needs reworking for mobile.Try it free →Platform readiness checklistVerify your game meets App Store and Google Play requirements before submission.Try it free →Estimate your project costGet a ballpark figure for your mobile game based on scope and complexity.Try it free →Estimate your timelineSee how long your mobile project will take based on genre, platforms, and team size.Try it free →
