While not currently active, the "modern" Tomb Raider trilogy has been offered for free on the Epic Games Store in the past. It is worth keeping an eye on their weekly free game rotation.
It takes approximately 15–24 hours to beat, depending on how much extra content you explore. Tomb Raider: The Last Revelation Free Download
Often bundles the classic Tomb Raider games together during seasonal sales for a significant discount. Game Specs & Details Genre: Action-Adventure. While not currently active, the "modern" Tomb Raider
This is the fourth installment in the series, following Lara Croft as she accidentally releases the Egyptian god Set. While not currently active
The Internet Archive hosts various software and companion guides for the series, which can sometimes include demo versions or older PC releases uploaded for preservation purposes. Low-Cost Digital Stores