It was exactly a month ago that I got pretty excited over the trailer to a new game from developer Dark-1 called Odium to the Core [$2.99], and while it arrived a bit too late to be included in our weekly roundup the game is now available for purchase in the App Store. Odium to the Core is a cave flyer where you'll guide your little creature through perilous levels collecting orbs, finding hidden secrets, and hopefully making it to the goal at the end. It uses the tried and true "tap to float up and release to drop down" control mechanic used in most cave flyers, but it also ties the gameplay into the beats of the kicking soundtrack that plays in the background. It doesn't necessarily feel like a rhythm game, but the way the music syncs up to the action is really satisfying. Odium to the Core is also not an easy game, not by a long shot. First of all the movement in the game is purposefully stiff, so when you tap the screen to rise it happens pretty slowly as opposed to some cave flyers where you'll instantly zip upwards with the touch of the screen. It feels kind of like flying an airplane and you'll have to be careful to plan your routes around the hazards in each level so as not to oversteer and slam into the environment. Once you get a feel for that movement though, it's a joy to play. The scoring mechanic is also really interesting as you'll earn more points the less you tap the screen, so there's even more incentive to not make any unnecessary movements. Col...