Illusion Labs has released an update to Labyrinth 2 for the iPhone and iPod touch, adding integration with Apple’s new iOS 4.1 Game Center and support for Retina Display devices. Labyrinth 2 provides a virtual version of the classic ball-in-maze puzzle game where players must use their device’s accelerometer to tilt the playing field and roll their ball through a maze and around obstacles to reach the goal. The game includes advanced features such as multiple balls, duplicators, fans, magnets and more to present unique challenges as players navigate the maze and supports multiplayer options over local Wi-Fi or Bluetooth. Version 1.3 introduces support for Game Center with leaderboards and 36 Game Center achievements that players can vie for and adds higher-resolution graphics for the iPhone 4 and fourth-generation iPod touch Retina Display. Labyrinth 2 is available from the App Store for $5 and is a free update for current users.