If you grab them right now, Jet Set Radio and a solid collection of other Sega games aren't just free for the moment; they're yours to keep. Sega's running their third annual Make War Not Love strategy game marathon on Steam this week, but regardless of who wins, everybody else... also wins. Already, the showdown between players of Total War: Atilla, Dawn of War II and Company of Heroes 2 has yielded one bundle of free games, with two more on the way later this week.
The first bundle — which you can grab right now — includes Jet Set Radio, Golden Axe, Hell Yeah! Wrath of the Dead Rabbit (plus DLC) and Sega Classics. If players of the aforementioned strategy behemoths keep competing to see who can, uh, play their respective game harder, the second free bundle will give you Streets of Rage II, Binary Domain and Condemned: Criminal Origins. The third will include Gunstar Heroes, Renegade Ops and Viking: Battle for Asgard.
So it's a mixed bag of good and not-so-good, but it is a) free and b) involves Jet Set Radio, two things that make it awfully hard for me to complain.