Gentle reminder that Amazon still sells Steam Codes for Fall of Cybertron. It's expensive, it won't get you the DLC (those are separate codes at $10 a pop), and who knows how long the codes'll last, but it's the only option besides the console ports or 🏴☠️-ing it. It's strange that Activision can't restore the Steam storepages for the games at Hasbro's behest, but I guess they just can't be fucked since they're riding on Microsoft dollars at the mo.
(Rise of the Dark Spark is also still available, but I've heard that one is butt.)