Transformers: Revenge of the Fallen is officially and cannot be legally downloaded for free. Because the licensing agreement between Hasbro and Activision expired in 2017, the game was removed from all major digital storefronts like Steam, PlayStation Network, and the Xbox Store. Legal Ways to Play
Since you can't buy it digitally, your safest legal options are: Transformers: Revenge of the Fallen Free Download
You may see the game listed on "abandonware" sites or community archives. Transformers Revenge of the Fallen (USA) - Internet Archive Transformers: Revenge of the Fallen is officially and
: Some third-party resellers may still have unused digital keys, though these are often expensive and unreliable. Understanding "Abandonware" or Xbox 360.
: Look for used copies on eBay or Amazon for PC, PS3, or Xbox 360.