Porting RuneScape from Desktop to Mobile

The UI/UX and performance challenges of bringing a 20-year-old MMORPG to iOS and Android - reaching 10 million mobile players.

Mobile Porting
MMORPG
UI/UX Optimisation
Cross-Platform

Studio: Jagex
Context: Pre-Agency Role
Role: Gameplay Programming
Reach: 10M+ Players

App Store Google Play

Java

Android

Apple

Perforce

David was on the mobile team at Jagex (2017 to 2019). This work predates Ocean View Games.

Before founding Ocean View Games, our lead developer served as a key contributor to one of the most ambitious mobile ports in gaming history: RuneScape Mobile. Bringing a 20-year-old MMORPG with complex desktop interfaces to iOS and Android required solving unique engineering challenges. The core challenge was not just performance, but usability - translating a keyboard-and-mouse experience to a 6-inch screen without alienating the player base. This experience now forms the technical backbone of Ocean View Games, providing our clients with AAA-grade expertise in legacy code modernisation, mobile UI/UX adaptation, and cross-platform optimisation. Some of the performance management patterns from this project have been open-sourced in our Unity Mobile Performance Architecture toolkit on GitHub.

Our Contributions

Core Systems Refactoring

Rewrote Mining and Smithing gameplay loops to prioritise tap zones and simplified state machines, making desktop logic feel native on mobile.

Adaptive UI Architecture

Built context-sensitive interfaces that dynamically shift between combat and skilling modes, decluttering the screen based on player activity.

Cross-Platform Parity

Optimised network packets and client-side prediction so mobile players exist in the same world as desktop players without disadvantage.

Gallery

Massive Scale Mobile Porting – The RuneScape Mobile Experience video thumbnail — Massive Scale Mobile Porting – The RuneScape Mobile Experience - Video

Mobile Skill System Porting - Adapting 29 Complex Interactions for Touch Input on iOS & Android

Cross-Platform Multiplayer Rendering - Optimising Character Models & Equipment for Mobile Hardware

Mobile Performance Optimisation - Rendering Expansive Open World Environments on Mobile Devices

Mobile Quest System Design - Adapting 20 Years of Story Content for Handheld Gameplay

Mobile Combat Optimisation - Large-Scale Boss Encounters Running on iOS & Android Devices

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Frequently Asked Questions

We start with a technical audit of the existing codebase to determine what can be reused and what needs rewriting. For most Unity projects, we can retain over 80% of the original game logic. The main development effort goes into redesigning the UI/UX for touchscreens, optimising rendering and memory usage for mobile hardware, and meeting Apple and Google platform requirements. Typical porting timelines range from 3 to 6 months. See our mobile porting service for details.

The key is context-sensitive interfaces. For RuneScape Mobile, we built UI systems that dynamically shift between combat and skilling modes, showing only the controls relevant to the player's current activity. Complex desktop menus were replaced with tap-friendly radial menus and gesture controls. Every interaction was tested to ensure it felt native to mobile rather than a clumsy desktop overlay.

Yes. For RuneScape Mobile, cross-platform parity was a core requirement. We optimised network packets and client-side prediction so that mobile players exist in the same game world as desktop players without any gameplay disadvantage. The mobile client communicates with the same servers using the same protocol.

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