TouchArcade - 4. 5/5 "game with depth well beyond what you would expect". PocketGamer - 9/10 "A brilliantly paced, sharp-edged brawler ". Over 2 million downloads! One of the best hack and slash games on mobile, Only One is an epic arena style sword fighting game where you push and kill waves of enemies off a pillar in the sky with your magical sword.