Green Man Gaming cuts up to 75% off a selection of downloadable Windows games during its (early) Winter Sale. That's the best offer we're seen from Green Man Gaming since January, and it yields several price lows.
A best bet is The Lord of the Rings: War in the North for Windows for $10. That's $5 under our January mention and the best deal we've seen for this game. (It's also a current low by $3.)