Mobile Game Porting Guide: PC to Mobile in Unity

Porting a PC or console game to mobile is one of the most technically demanding challenges in game development. It is not a simple rebuild. Every assumption your game makes about input, screen size, processing power, memory, and player session length needs to be reconsidered. Teams that treat a mobile port as a "downscale and ship" exercise end up with a product that feels awkward, runs poorly, and haemorrhages players within the first week. I led the mobile porting effort for RuneScape Mobile at Jagex between 2017 and 2019, adapting a 20-year-old Java-based MMO with a complex UI and deep systems to run on phones and tablets. Since founding Ocean View Games, our team has continued porting Unity titles across genres and complexity levels. The lessons from those projects inform everything in this guide. Before starting a port, assess whether your game is ready. Our porting feasibility guide covers that assessment in detail. This post picks up where that guide leaves off, walking through