The original Titanfall (2014) was released for Windows 7, Windows 8, and Windows 8.1. Windows 10 did not exist at launch. However, you must have Service Pack 1 (SP1) installed.
You can download Titanfall 1 on Windows 7 only if you already own it via the EA App. However, as the servers are permanently shut down. If you wish to play a similar game with active servers, it is highly recommended to download Titanfall 2 , which is fully active and supported. titanfall download for windows 7
Here are the essential points to include if you are researching this subject: The original Titanfall (2014) was released for Windows