I saw this deal on Gamersgate and I couldn't keep this one from you guys. Especially because I ported Deus Ex: The Fall 2 days back and is now only 2,50! :) And this counts as well for Deus Ex and Deus Ex: Invisible War. Also the Mac version of Deus Ex: Human Revolution is 75% off and only 4,50! All in all, it is possible now to play all 4 Deus Ex games on your Mac with 75% of!! Take that change now I would say because after 24 hours this deal ends.
Check the deal out up here... (If you only see "Human Revolution", then change platform filter to "all platforms" to see the other 3 titles as well)