The deal in question is 75% off Europa Universalis IV (very good turn based strategy), but it's also got the best price for the unique Papers, Please and 'old school dungeon crawler with updated graphics' Legend of Grimrock... and many of them are multi-platform.
This entry was originally posted at http://lovingboth.dreamwidth.org/508467.html, because despite having a permanent account, I have had enough of LJ's current owners trying to be evil. Please comment there using OpenID - have and if you have an LJ account, you can use it for your OpenID account. Or just join Dreamwidth! It only took a couple of minutes to copy all my entries here to there.