Another thing I came across today.
According to Touch Arcade you can get the Sentinel trilogy free this weekend. I've downloaded 1 & 2, had 3 already.
I think I actually paid for Sentinel 3 :(
One of the best tower defence games on IOS, totally free today,
from itune:
Happy Appvent! In collaboration with www.appventcalendar.com our app is FREE today!
