Users simply have to add the title to their Origin Game Library and download it. A two-day clock will start ticking down once the fully installed game is launched for the first time and will continue to run whether players are in the game or not.
Progress is saved after the free trial, so players who purchase the game can pick up where they left off.
The offer is only valid for players who didn't claim the Titanfall Game Time promotion when it was previously available.
Respawn community manager Abbie Heppe revealed the third "and final" Titanfall DLC pack, IMC Rising, at Gamescom earlier this month. It will include three new multiplayer maps when it launches this autumn.
Free title updates adding new features and game modes are also planned for release. "We've really just begun to explore the Titanfall universe," Heppe said.