Is this for steam?

no

couldnt say but it is using ubisofts drm so keep that in mind, might be a steam key but dont have a history with gamers gate

For clicky: [Text here](Link here)

As far as the game goes, I'm almost certain that it's not a Steam version because no Steam keys were made for AC:R. The only Steam versions that exist are bought directly from Steam itself. All thanks to Uplay!

If it were steam it would say so under drm.

see borderlands

all ubi cdkey is not steam reedemable except shoot many robots and r.u.s.e i think