Infinite Warrior by Empty Flask Games ($2.99 >>> $0.99)
One of the most unique endless runner variants with great visuals and effects. It also sports one of the best hacking and slashing satisfaction with its great presentation.
The devs have been very responsive at listening to user reviews and impressions that a new version will also come out soon with tons of improvement and user-suggested content.
Highly recommended, especially at $0.99.
Exact-Psience My 2014 Top 10 Games of the Year: Monster Hunter Freedom Unite, Hearthstone, VVVVVV, Battleheart Legacy, Wayward Souls, Bug Heroes 2, Powerpuff Girls Defenders of Townsville, Deep Loot, Monument Valley, Bioshock Honorable Mentions: Traps N Gemstones, Bardbarian, Goblin Sword