Users who added it to their account during this window kept it forever.
While was famously offered for free during a limited "Stay Home and Save Lives" promotion in April 2020, it is not currently available for free download as a permanent offer. total-war-shogun-2-pc-game-free-download
This was a one-time event; currently, there is no official "forever free" download. Current Ways to Access the Game Users who added it to their account during