In a response to a question posted via Twitter asking for the installation size of the upcoming mecha FPS Titanfall, Respawn Entertainment’s Vince Zampella responded which is what can be assumed as the official install size of the game on PC and damn is it huge:
That’s right! At a whopping 48GB of disk space you better be ready to clear out some files just in case you’re running on low on storage.
The system requirements for Titanfall are otherwise more easy to swallow.