Released in 2008 for the Nintendo DS, Avalon Code is an action role-playing game with a unique twist. Developed by Matrix Software and published by Marvelous Entertainment, the game revolves around the Book of Prophecy which the player character uses to catalog various items and entities. These entries can then be manipulated to alter characteristics of monsters, items, and even parts of the environment. Set in a vibrant world facing its end, players must navigate through puzzles and combat while deciding what to carry to the new world.