Auditorium was released by EA on the iPhone for $2.99. The game contains 25 base levels, and contained access to purchase additional level packs for 99 cents each. Now though, as reported by Touch Arcade, EA has dropped the price for the core game from $2.99 to nothing at all.
For those unfamiliar with the game, it starts in grayscale with you guiding a flow of light particle into specified areas on the screen. As you progress, the colors begin to show up, until you’re viewing everything in vibrant shades of blue or red, for instance.
While the main game is now free, the cost for the additional levels remains the same.