Keeping up with the Apple anniversary sales here: http://appsnatcher.com/#m/appsale
Itunes links:
ZENONIA https://itunes.apple.com/us/app/id316720410?mt=8
ZENONIA 2 https://itunes.apple.com/us/app/id364597916?mt=8
ZENONIA 3 https://itunes.apple.com/us/app/id434175353?mt=8
DESTINIA...
Here's the TIME article on it.
It links to AppSnatcher, which seems to be keeping up with all the sales pretty well, especially if you're interested in some of the non-game apps that are also being made free for the anniversary like Traktor DJ that dropped from $19.99.
Here are a couple 4.5 star games that have gone free:
Rocket Riot by Chillingo is a super addicting side-view shooter. Had this watchlisted just because I loved its Metal Slug feel, but it is so much more fun. The movement is a lot more dynamic, and I love the aiming system. (4.5 stars, 2 days...
Rebirth of Fortune 2 apparently went free two days ago, hadn't checked my watchlist in a while. Heard it's very good iOS option for Final Fantasy Tactics lovers.
http://www.appsnatcher.com/#m/app/Rebirth-of-Fortune-2~~30jVlsAICZBW-NjYT3AMww